ls1 truck or 4.8, 5.3, 6.0 all the same

 

How long does it take to put these on yourself ??? I want a set, but don't want to spend the money on them, y-pipe, and installation. Is there anyway to make use of the stock cats so I don't have to buy highflow cats too ???

 

You can just get the headers and then have your factory Y modded to fit. It's tight, but I heard it can be done. Not sure if that would be cheaper though.

 

can you get all the spark plugs out with these headers?

 

sure.