I seen in the past week these hitting ebay, china built but dont look to bad and one set was priced at $500 buy now and another set started at $50, probably go for $250.

They look to be fabbed by the same folks dong the small tube stainless headers that are pretty decent.

I asked another supplier and it looks soon to be a full twin turbo china kit coming to market for around a grand.

Might be fun if one subs the turbos for good ones.

https://www.ebay.com/itm/DODGE-MOPAR-Twin-Turbo-Manifolds-Headers-T4-T3-318-340-360-LA-5-2L-5-9L-MAGNUM/253346830320?fits=Make%3APlymouth%7CModel%3AVolare&hash=item3afca5d7f0:g:WM4AAOSwXf1aTo63&vxp=mtr