no. RS2 had Porsche hubs as they came with Porsche wheel with 5x130 pcd as standard.
There is a tech forum on this on audiworld, uses standard audi hub with A8 disc I think and the RS2 brakes.
Word of warning. The calipers from Porsche up to the end of the 993 run of 911 are not monoblock calipers. There is a design flaw in the section between the pad and the piston, they trap dirt and water, corrode and the steel plate swells with rust trapping the pad and binding.
Fine if you service them regurlarly, expensive and time consuming if you do.
the 996 911 variants are monobloc (one peice) still have four pistons and do not suffer from this problem.
check out the variants on eBay, they are not that expensive anymore, especially since everyone is going sixpot from the 996 turbo and GT3