I've been looking around for a new motor now and at first I was going to go with the DSS probuilt 331 lvl 20,but I keep seeing the R302 block in alot of high powered Fox mustangs,but I cant seem to find that block any where.Does anyone know where I can find the R302 block and how reliable are they to say 600hp or would I be better off with the DSS short block?