Pre Fabrication Exhaust Parts

I'm looking for a company that supplies prefab components to make a pipe for the bike.

Intention is to build a 4-2-1 that will fit the ZR motor in my KZ750R1 chassis.

It would be nice to order the parts like 2/1 collectors, bends and other pieces to assemble this myself.

Upon searching I find (as usual) full systems from European sources. Latest is BSM on the Klasmo site. Import cost makes me think this can be done at the same cost without importing it then modifying to suit.

If there are any of you with a lead I would greatly appreciate it. Would prefer Stainless Steel as the base but willing to look at other options.

www.burnsstainless.com/index.htm

Perfect thanks!

here's some others
www.stahlheaders.com/header_parts.htm
www.onlinemetals.com/merchant.cfm?pid=77...hes&id=283&top_cat=0

Here's what Jegs carrys

and another company