The CT15 and manifold are a single cast to improve exhaust gas flow and give a faster spool than a CT20.
Apparently this is a great turbo for the street as it spools up almost instantly and comes on boost strong from around 2500rpm. Produces 260bhp on the stock caldina engine but the caldina 3sgte is also more advanced electronically so that will help. It has a steal shaft and guys in the states are running these at 22psi! Which is fuel cut on the caldina gen4 motors.Only asking
£200 but remember it will only fit a rev3+ head due to the manifold.You also need to modify the downpipe because the stud pattern is different.
This gets done regularly in the states. Or I can supply the stock caldina downpipe for no extra charge if you still want to retain a cat or want to gut it to keep things simple. 
