what size turbo fits on this manifold? so far 3 of them was sold for under $350. this looks like a $800 manifold.

http://cgi.ebay.com/ebaymotors/ws/eB...tem=1873143678

i sold my apexi rx6 turbo recently and i'm thinking of putting together my next setup instead of buying a kit

 

Any T04 based turbo will fit. That looks like a copy of the FEED manifold.

 

This may sound stupid, but what is a T04 based turbo?
Would it fit a T88 or T78 turbo? I have twin turbo, thinking of going to Single. Would this be a good start for a single turbo conversion? Someone please help!

 

T04 is a term mainly used to describe a family of turbos that use that type of flange on the Turbine---->manifold connection. The t-78 uses that footprint as well.