Break in with TTIs

Hey guys, we were talking to the guys at TTI at the fall fling and they said that we shouldnt break in our new 360 with the tti's on it. He said that they would over heat and start to eat the coating and discolor. Has anyone ever tried the break in with them? Also if we have to use manifolds will the manifolds and stock exhaust work on my duster from a 1979 B 200 Doge Van? we are worried about the stock crossover pipe fitting....

Any help is much appreciated


Bryce/Bob