C20let & Gt28

I'm prehaps looking at buying a C20LET as part of a "job lot" ...

I know very little abouth turbos so i have some questions.

It's all standard apart from a GT28 ? from a mk1 focus RS apparently, it has all the pipework / manifolds e.t.c and is ready to go.

Will this all work on the standard managment ?

I "think" as its a better, more efficient turbo you will really need to lower the compression ratio as it will generate more power at the lower levels of boost compared to the standard kkk. You can either fit low comp pistons or thicker headgasket.