headers....should be run with true duals only?

[jasonroman]

well a while back, i went through exhaust nightmare. but at the time i didnt have headers so, i just had guy put on a new cat back exhaust.
i just picked up a set of headers. and looked for a couple prices on getting them put on.
one guy told me 300 to make headers work with my current exhaust.
which is manifolds, a y pipe i guess. that go into, new cat, new pipe to muffler, and at muffler i have two pipes running out and exiting behind rear wheels
another shop told me theres no point tying into the current piping. headers should be run tru dual, for power and performance.
no price yet, needs to look at it....
3rd shop, guy told me today around 800 plus whatever is involved getting the manifolds off....

800, dont have it, but if i did, i think id spend it on lowering my truck rather than doing the exhaust a 2nd time.
first time ran me 500 and alot of headache.

looking for info or advice.

unfortunateley i am not much of a mechanic at all, so i dont think ill try cutting off new piping and re piping myself.