my car mods (90 rx-7 turbo II) 3 inch downpipe greddy power extreme with dual mufflers apex avc-r boost controller apex afc greddy fuel cut eliminator modified factory turbo with garrett t04 housing 800cc secondary injectors higher flowing intank fuel pump (can support up to 600hp) plenty of gauges the neccessary ones at least tokico illumina shocks with lowering springs and larger diameter sway bars only mod i did to the brake system was heavy duty brake pads heavy duty ACT clutch best time i ran was mid 12's at around 110 mph with a shitty 60ft time i blew the engine a couple of weeks ago so i'm gonna take advantage and get a heavy duty rebuild
4 piston calipers came standard on my 90 rx-7 turboII they slowed my car down from 150mph pretty quick it takes me less than a half hour to change pads and cut rotors on my car