It is not wrong of TTI or any other header manufacturer to require the engine sit in the OE location. After all, they designed the headers to fit that way so how would they be responsible for mods that change that?
I have put headers on all kind of musclecars and Abody's seem to have the biggest problem..... Before I would buy a set of TTI's a set of junk summit headers would be in my lineup and bang away if necessary. My opinion is like an @#$%^&*( in that everyone has one. If someone wants to roll the dice or accept them possibly having fitment issue, that's their lane to drive in.... Not I lol...
