I was under the impresion that the 2.8 box woul snot fir as the input shaft was to long u woul dbe better of just fitting a sierra box in as it the same just the input shaft is diffrent you can pick one up for £50.

As for clutch you can run a std. clutch up to about 125bhp at the wheels for every day use.

As for prop I think the capri prop is to long if you send me the mesurement you have I will check it against my RS prop for you.