What 's an average price I should look for a decent true dual set-up?

 

I supplied the mufflers, tailpipes and reducers. That was about $140 for those parts from Summit. Then the shop fabricated an x-pipe and all the tubing (2.5" aluminized .065" wall, over the axle) for about $530 including tax. Total cost was about $670. That's not including the headers, which were around $700 (ceramic coated Hooker LTs).

EDIT: Just so you know, turn downs are a LOT cheaper than over the axles, in case you are thinking of going that route.

 

I paid about $130-$140 for 4 45 defree 2.5in dia mandrel bends at JCW.com, 2 2.5in header reducers to connect the pipe to my headers and like $40 a piece for bullet mufflers. Muffler man welded me an H piece on my pipe and welded all the rest up for $75. So about $210-$220.

Oh btw the muffler guy didnt have to bend anything, the 4 bends I bought lined up perfect to form an "s" off each header and he just welded a 10in 2.5in pipe to form an H. Worked out nice.