I have 1971 510 I am about to finish building. I just dropped in a l20b with a 5 speed from a 620. Now I want to go with 4 way disks. What r my options here. I was told 280 zx front and rear, also was told maxima front and rear. Any other options??? Also which is better? I want to increase breaking as much as possible. Please be specific in years, everything I would need to collect, and if I need to mod anything as I would like to get this done soon. Thank for any and all advise