Ok...Let me start by saying, I don't work at PTC, nor am I a converter expert, but I have sold or given specs for countless nitrous converters. If an 8" converter, was built by PTC, to go behind a stroker big block, I could nearly guarantee, that there was NO mention of any nitrous being put on that motor originally. An 8" converter, is just NOT what you build for a squeezed big block. Now if you talked to Kenny and he suggested that one, based on the 3 choices you had, that just likely means it is the tighest of that group, but not what the car really needed. You can only make an 8" converter so tight.

You need to have a converter, built to YOUR specs, by someone. Again, I don't know Coan policy, but I know PTC will take their own converters in on trade

Monte