another email with GMPP....
 

this time asking them about exhaust manifolds for the ZZ572:

"Thank you for visiting the Performance Parts website.

Thank you for your email. For information regarding exhaust manifolds for
the ZZ572 crate engine, please contact your local GM Performance Parts
Dealership. The professionals there have the latest technology and GM
Performance Parts product information and would be in the best position to
assist you. To locate a GM Performance Parts Dealer in your area, please
access the locator feature at the Performance Parts website within
www.gmgoodwrench.com.

Please note, when you contact us via email you are contacting the GM
Goodwrench Internet Support Team. We assist with general GM Goodwrench
inquiries, (eg. dealer locations, phone numbers), however, we are not
certified technicians. For this reason we ask you to contact your nearest
GM Performance Parts Dealership and speak with the professionals there.

Thank you for your inquiry.
Regards,
Goodwrench Internet Response Team"

I don't think they like me. They don't want to answer my questions.

Try telling them a basic out line of your plan to put the motor in a 4th gen. That way they can't use the "we don't know what you are doing with it" excuse.

- Justin

nah, they really aren't techs and really can't answer technical questions. much better off emailing your local dealer (yeah right) or your favorite mechanic. or look for a website about 572s in 4th gens. i'm sure there has to be a forum, somewhere...

:stupid: all you're doing is beating a dead horse

Did you mention what year and model vehicle you were putting it into?
Did you mention if it would stay N/A or progress to a power adder?
Did you mention track only car or street car?

Without specifics.... how can you expect them to comment?

I deal w/ technical questions via email also..... the more info I am provided.... the better answer one will get.

If it is a vague question, "speak with your dealer as they are in the best position to review your concerns."