I'll have a guess at price: BW EFR turbo's aren't cheap, and that looks like quality TIG welding there with some nice options. I wouldn't put it past @
FT-86 SpeedFactory to charge somewhere between 4,900 and 5,500.
as for power, I'm sure others can chime in; the 6258 is rated for 225-400hp. the 6758 is rated for 275-450hp and the 7163 is rated for 400-600hp. These ratings are off treadstone's website. 7163 is the largest B1 framed turbo you can go before getting into the B2 frames, starting at the 7064.
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