ok,
i have stock turbo runnin 12psi,fmic,3"cat back stock front pipe and split pulse dumpa,k&n panel filter, safc2
had the safc tuned bafore fmic went on at 215rwhp, at a guess went to 220-225rwhp without a retune of safc. with gearbox and retune of safc went to 255.8.
as for the price of gearbox
parts come to $3000(america sucking up parts and hard to get, prices for conversion kits go through the roof)also my tailshaft cost 300 cause i have abs and they are hard to get(so ive been told).
to fit 1550(includes new extreme clutch)some machining, bits and pieces and about 10hrs labour
standard 150 for dynotune for safc2
thats about it