Ok I was reading about exhaust manifolds and better flow came across a few ppl using f body exhaust manifolds.. but read 00-02???? I found a pair off a 99?? Is there any flow difference? Will they work??

Not sure as to the year differences, but they work just fine. You can compare your manifolds to mine, pics in by build thread in the link in my sig. Don't forget to pick up an ac delete pulley. They sound great!

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Build thread for my 88 + 3800NA swap

Yes they are infact different. Urs are 2000+ and I have an a/c delete already

Mustang ones require rework. Just use the ones that work.

I spent $30 at the junkyard, just walked in and asked for the manifolds from a camaro or firebird with the 3800.

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Build thread for my 88 + 3800NA swap

quote Originally posted by aaronkoch: I spent $30 at the junkyard, just walked in and asked for the manifolds from a camaro or firebird with the 3800.

Wow, that is cheap. The 3.8L Mustang headers I got at the pull-n-pay cost me $70 AND I had to pull them myself which sucked... No idea why I pulled them but I keep moving them out of my way on the shelf. I think the only thing you have to do is cut the center pipe, rotate it to match the 3800 holes and weld it back up. Still more work than you had to do.

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-Brian

My 87 GT Poly Suspension Upgrade (all pics) thread
Removing the roof panel
My HUD install thread
Isn't it strange that after a bombing, everyone blames the bomber, his upbringing, his environment, his culture, his mental state but … after a shooting, the problem is the gun?