FWIW...FTI has a good reputation around here. A friend of mine that has a pretty fast Nova and has raced for years recently got a converter from them and is very happy w/ it.
Adding 250 hp and who knows how much torque is definitely gonna loosen up the converter. Get one built for your combo.


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax