Tune,Dyno....Can-Bus.

I am in the same boat as well, lol

To expound upon the size difference:
http://www.speednik.com/files/2013/06/ohcvspushrod.jpg

Left is a Toyota V8, right is a LS V8. (Technically, it's a LQ iron block motor, but the dimensions are the same.) You can see why they are popular for swaps. They'll fit into the engine bay of even a Miata and still make 300hp without any real effort, and just go up in power from there.

Here's an example:
http://www.jegs.com/i/Chevrolet-Perf...ductId=1941625

That's a new crate motor, so it's $$$. But it's a good example. Same size as the motor above, but 525hp/489tq without turbos or superchargers. For a less expensive route, you can get a hold of a LS3 out of a wrecked Corvette/G8/VXR8/Commodore etc. and you'll start at 400+hp and a cam, intake manifold, and head work can bump the power close to that crate engine.

And that's the straightforward way to make power on a LS motor. Remember that Iron LQ block above? Well, it'd be pretty heavy, but you can get aluminum blocked truck motors based on the LS that are cheap, easy to find, and take a LOT of boost/nitrous.

is everything retained on the brz? Tracton, cluster etc

Yes, first few pages stated that the factory ecu would be retained and all the gauges would work.

Has a total added weight number been determined with the motor and tranny vs stock?.

I thought it was 60lbs, but after rereading the WGP swap, they claim 200 extra pounds up front

The WGP swap claims 60-80 lbs

“The engine swap only adds like 60 or 80 pounds over stock,” says Doug

http://www.lsxtv.com/features/car-fe...-subaru-brz06/

Those guys are so full of it that I wouldn't trust anything they say

This. They just sold that car to a guy, and he's already trying to sell it on facebook.

60 - 80 lbs fromt he engine and the rest might be from the transmission swap. not to mention beefed up drive shafts,different rear dif, more fluids, ect ect

Ahh thanks for the "might". I'll believe it when I see it, and definitely not from them.

Nice build man, im on the same boat i have an ls2 out of a gto with a t56 and just finished my ls3 heads, cam and intake setup trying to get close to that 500 mark, im so anxious to do the swap that im ready to buy the wepons grade kit but ive been just hearing some bad thing about that and specially after that kid decided to sell the car as soon as he bought it made me hesitate, the guys your doing your swap with are one of the best in the business when it comes to ls swaps, any idea when this kit will be available for purchase? And will they able to accommodate all the accessories like the ac, eps ect. ? I just dont want to spend 6k for the wgp kit and regret it

@cf6mech
Could you request corner weights at some time? I appreciate Vorshlag has a metric truck load of stuff to do but it would give an accurate picture of weight distribution.

They are planning on corner weighing it I suppose this week or in the very near future (no later than a couple weeks), that is a promise as everything is in the car now. I don't suppose everybody actually reads the whole build thread but.....for a four cylinder engine the FA20 is a pig, it was weighed and its the heaviest four cylinder Vorshlag has come across ( they have a habit of weighing everything). WGP is pretty close in their 60 to 80 lbs range , Vorshlag believes 100 lbs at most added weight. 60 or 100 pounds either way is negligible difference in my book. There is sometimes more than that in what drivers weigh.

********************** Vorshlag Build Quote *************************
The saving grace of the FA 20 engine is the height: this lump is a lot shorter than an average upright inline-4 or V-configuration engines, with the bulky DOHC cylinder heads sitting very low down in the chassis. That is all this engine does add - a lower center of gravity. But low weight isn't what this unusual engine layout offers, not hardly. As you can see below, we've already weighed the stock FA20 engine and transmission at 480 pounds. This is, by far, the heaviest 4-cylinder aluminum engine we've ever weigh.