Dougs has that aluminized pipe and mine still looks good. The parts needed for true duals are:
-2 flex pipes
-X-pipe
-2 resonaters
-2 mufflers
I got all my parts from Stazi and it cost me $525.00 at the time, so the price could vary now. This may sound like alot and it is, but could've cost alot more. For example the X-pipe was supposed to cost me $150.00, my cost from Stazi, $70.00

, but the price now could've changed, contact Stazi and see what he can do for you. You'll also need MIL eliminators and that too Stazi can get for you, but I bought mine from Dallas Mustang and they're all ready to go with male/female connections. Those cost me $70.00. In total I have about $950.00 tied up in the exhaust system and it really sounds good