hey go with glass packs they are loud and work really good i have a true dual set up on my truck. the shop only charged 250 to bend and weld my 2.5" pipe and and check on ebay for stainless steel tips there cheap and look good thats were i got my glass pack to. if u go true duals from headers its just as loud as any v8 ill post pics on my site.

 

i got glasspacks on mine (as said in the signature) its a tiny muffler, width wise, but its plenty loud enough and actually sounds pretty good, i've never been outside when it gets in high rpms (bc of rev limiter) but driving it sounds like it gets high pitched, but it was only 200 bux for muffler w/ dual pipes coming out and chrome 3 inch tips