I believe Jon was the same as me and stayed with the .63 cossie housing and we both had our down pipes custom made as we didn't want the smaller housing that you get with the rs turbo's, in my opinion you should stick with a cossie housing as it is well worth the effort.

Some people said to me that it was going to be laggy with the cossie .63 housing but it actually drives a hell of alot better as seems to be much more suited to my 1.9 lump.

The car is very driveable and has none of the unnecessary whell spin that used to happen when the old stage 3 T3 kicked in.

The turbo now comes in just before 4k and pulls like a train all the way.

Still yet to be mapped but got a few plans over the winter

Anything else that you would like to know about it just ask mate and I'll try and answer