This is hopefully gonna be my setup:Long tube headers with a Stock C5 vette x-pipe welded onto it with 2 40 series flowmasters welded onto it with no cats. I no it will sound good, but maybe to loud?

And another thing is i cant figure out is which headers to buy, any suggestions? thanks!

 

Yes it would be to loud without cats.I think you would cheaper to buy a aftermarket x-pipe and quieter with 70 series Flowmasters.As far as headers I prefer the ASM longtube headers.They're expensive but they deliver the quality and performance you pay for.

 

Where do i buy an x-pipe at?

 

Try Magnaflow for an x-pipe.I don't know how much more power you would actually make with true duals.I'm making over 400rwhp with a 3" Flowmaster single system.

 

Here's where I bought my Magnaflow x-pipe from: http://www.exhaustproslinc.com/xandypipes1.html