I just wanted to know where are they the cheapest to buy and best kit. I want 4 inch turbo back and six inch stacks. thanks mario

 

ummm, ebay has kits, black cloud diesel or check like local shops.. either way its gona be around a grand if you do what you are sayng

 

ive got the y pipe and some under the truck pieces. 200 buys it. starts with a 3" to 4" adaptor which then stays as 4" till it enters the bed then turns to 5".

 

I've seen the kit on ebay for $150 (seller was righteous pipes). Then you would need a pair of 6" stacks, a 4" downpipe, and a 6' or so length of 4" pipe. Add some clamps and maybe a small piece of 4" flex and you got stacks!

I did mine for well under $200 (dual 5") and they're all chrome. It required a little fabrication and some thrifty shopping (B stock chrome 5"x6' that has a couple small nicks, nothing you'd really notice, B stock 90s). I already had the 4" turbo back though.