hello,newbe here on this forum,I have been asking around and cannot get a direct answer on the following..ok here goes..
I have a 03 excab stepside chev z71,5.3 engine,I want to add my complete left over exhaust from my 03 silverado SS,it will fit perfectly with the hangers,i just would need to take it to an exhaust shop and have them adapt the inlet because the factory SS exhaust is dual inlets..
my question here is will I gain as much as a magna flow or flowmaster cat back system?
thanks for any help..
terry