Post you 4 speed racing combos.

1972 340 duster, jerico trans, mcloed soft loc clutch, dana 60, w/5.57 gears, 9x30 slicks, calvert system, 3350,# 4.100 by stock stroke, 8.5 comp ratio, 1.88 /1.60 stock heads, stock cast iron int, T.Q carb. hyd stocker cam. 11.37 @ 115.57 mph. geez, no NOS, lol