I asked a friend about this kit. This was his reply
Going on purely the spec, it slightly contradicts itself by claiming to have a "Stage 5 turbine wheel" which would be a large version of a T3 turbine (big power capable mind) however the pic looks like a T4 turbine housing (divided tang housing). The 62-1 compressor is big power capable. But, it is not particularly efficient at high boost, which is what you really want, and looking at the map, its certainly happiest around 10-20 psi and it really would not be able to supply 25psi on a CA18DET. It is really a better choice for a large engine needing moddest amounts of boost. You may be able to see what I mean on this calculator which contains the 62-1 map. Just input the bore and stroke of the CA in inches, and assume VE at somewhere between 80-100% and intercooler efficiency at 75-95%. Just put in comp efficiency at 75% to begin with.
http://www.turbofast.com.au/turbomap.html