clutch setup

does anywone know what modifications have to be done when installing the A-P clutch kit, there seems to be very tight on every aspect.

Need a bit of detail here.
What engine, gearbox, flywheel, bellhousing, adaptor plate, AP clutch, release bearing, slave cylinder ?
I have installed a single plate APracing clutch- its fine for my 289 4V with R21t gearbox.
So, what have you got ?
Tony.