If you want to make power yes, but I don't. I'm content wandering around the high 200's with a cool blower whine.
Haven't broke the trans yet. I'll probably break it now won't I.
Regardless, I'm not interested in a $3000 trans just to hold 350-400 WHP.
Ideally you'd use L26/L36 top end on an L67/L32. You get slightly better flowing heads, much better LIM/UIM and low compression.
TGP- 266whp- 10 PSI, intercooled CT kit PT 61, M90 block off, 2.5" exhaust, 42lb injectors, CT PCM, , L67 MAF, 42lb injectors, 18" wheels
TGP- 286whp- 11 PSI, Intercooled, CT kit PT 61, M90 block off, plog, 2.5" exhaust, LT1 MAF, ZZP PCM, 42lb injectors, Racetronix fp, 18" wheels
TGP- 346whp- 12 PSI, Intercooled, CT kit PT 61, M90 block off, plog, 2.5" exhaust, cutout, LT1 MAF, ZZP PCM, 42lb injectors, Racetronix fp, 1.9 rockers, 16" wheels