[indymyway]

having problems figuring out what exhaust to go with. need from engine back. 1991 f150 4wd 5.0 im in wisconsin and in the county i live in they dont test emmissions at all but im sure they will at some point and time. want to go with dual exhasut true but have the o2 sensor thing that i need to deal with. im going to start with shorty headers but what about y pipe and where will i place the o2 sensor and how to put that o2 sensor in

 

[junkyardjeff]

I bought the shorty headers fror a late 80s to early 90s truck for my galaxie and both headers have a place for the O2 sensor. Jeff

 

[indymyway]

what brand were the headers

 

[indymyway]

whats the best way to get off the old manifolds without running the motor

 

[indymyway]

whats the best way to get old manifolds off without running motor to warm up bolts