Replacing exhaust manifold with headers. But which ones??

[AuroraGirl]

The manifolds haven't been on more 15 years lol. But I shouldn't need to buy more than 2 mufflers and maybe some clamps/hangers

 

[Grit dog]

My bad, I misread the tailpipe thing. Apologies.
If you have the whole system, why not? Let er rip.
I just wouldn’t expect much, if any seat of the pants gain by just going to headers.