hx55 exhaust housing??

[Sabbath5.9]

any possible way to get a smaller housing then a 17cm for this thing??? hx55


P.S. the wastegate and manifold look good!!!!!!! thanks again!!!!!!!! didnt install on the truck yet. will post pictures when its complete!!!!

thanks E.D.

 

[White Duramax]

An S400 exhaust housing will fit with some machine work. So you could get a .90 or 1.0