to convert S13 to 15 front isn't that hard, what u need is a pair of S15 gaurd. after market front bar(u can choose standard, but would u?) and a bonnet, even the bonnet is carbon fibre, they won't even cost close to a$3500!! sell yr R33 front at $us1000 and source the gaurd,bonnet, front bar, i GUESS would be about us$1500?