geez search more there are heaps of wheels that fit, spoons are overrated and there are quite a few pads that will fit the wilwoods, i believe they are similar size to stock dcr2 pads... there are pads out there that fit no problems, pm one of the pov guys, one of them is rocking wilwoods... other option is baer but there slighly larger rotors...

if its for a track car youd be better off with 16" wheels then 15s cos of the higher walls of tyres means more flex, drag guys mainly use 15's, look at what the spor car motion guys in the states run, hardly 15's.. 16 to 17" rims