Turbo cartridges for 7cm exhaust housing

[RedlinedTSi]

I picked up a fully ported 7cm exhaust housing with a 34mm flapper door for good price. Now I'm trying to find a turbo cartridge to mate with it. The biggest cartridge I can find is the Big 16g. Does anybody know anywhere else that sells a larger turbo cartridge that would fit inside the 7cm housing? Thanks.

 

[asian312]

A 20G will . U might be able to get the cartridge from turbochargers.com. They are the only ones I know that directly deals w/ MHI.