We are converting my brothers 57 100/6 to front disc brakes using BJ8 axles so we can use the four pot Toyota brake caliphers. Not sure which coil spring to go back with. The 100/6 spring stands about an inch taller than the BJ8 spring and has about a half turn more coils. BUT the BJ8 springs are thicker, maybe 5/8" vs the 1/2" thk 100/6 spring. We want the car to stand a little taller. So comments please as to which spring to go back with?