Just got back from getting the final drive swap completed by a local shop in the NW area. Got the ring/pinion and the install kit from weir performance for a little over $400
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Found a shop in Portland, OR that had done SEVERAL final drive swaps on the 86 platform, and he's incredibly fair for his rates!
Got the entire labor complete for around $370
$300 for labor
$70 for supplies
It was done in a single day. I just need to change out the fluid in around 1000 miles after the gears have broken in. Absolutely NO whine at all from incorrect backlash. Entire car has more torque, and when this mod is paired with E85. I don't believe there is a better NA setup that you can do!!
Just wanted to share my experience