FTI TC Anyone run one?

I have had converters built for my cars from Dynamic, PTC and Ultimate. Be brutally honest with them. It’s the best upgrade u can do to ur car. Kim
So what do I do with this custom converter when I pull my 360 out and put a 440 in it? or 383? or 318 magnum? I'll be a monkeys uncle if I buy, then resend and pay again, then resend and pay again for every cam, engine, and combo I put in my car. lol...