I have a 1999 Trans Am and was about to buy a LS6 intake from a friend part #12573572. Will I have any compatability issues with my car? Everything looks like it will work and I have already !EGR and am using an expandable freeze plug to plug the hole now. The new intake doesn't have EGR provisions so that works great, but was just curious if anything else was going to be different in any way.

 

everything should bolt up fine. Just make sure you have the front coolant pipe and the back coolant plugs...

 

are these pipe and plugs something that my LS1 intake doesn't have now

 

Correct. They are specific to the LS6 application.

 

In order for it to be compatible, you will need the following items:

1. GM Coolant Plug - Used when converting from LS1 style intake to LS6 or LSX style intake. (2 required)
2. GM Coolant Crossover Pipe - Used when converting from LS1 style intake to LS6 or LSX style intake.

Those can be found here at Thunder Racing:
http://www.thunderracing.com/catalog...&sid=122#P3601