how 5 headed do you want to get?   turbo coupe is prob a .48 exhaust.   a step up would be a .63 with a super 60 compressor . next step would be a .48 stage 3 or .63 with a t04e 50 on the cold side.

As for the chinachargers. YMMV If it is just a boneyard block and head sure grab one, put an oil restricter on the feed line and tell us how it works. Some people have had success with them others blow shizod up...  again may be the turbo may be the tune or the civic to which they where attached... If you are happy with the boost you have now and are reasonably handy with a wrench and the wheels are not yet eaten then the cheap solution would be to buy a good rebuild kit and do the seals and bearings in the one you have now.   I have tinkered with some of the china stuff. THere are some good products out there if you try hard enough and find the actual manufacturer.  I found a Greddy s type bov copy that has a way better diaphragm than the original while most of the ones out there are using what looks like inner tube.  Again YMMV.

Buy a header.


OhSix'

TO4E50 is a real nice upgrade.

A RFE6 flows better than a E6.
It was a replacement manifold
and can be found with a little searching.
Go to turboford.org

How do you rebuild a turbo as a T-3/T-4 hybrid?