don't know how low you want to go, but here's what I did. My '49 has a 12 bolt out of a c10 with stock springs, 2nd and 4th leaves removed,and 2" blocks. Tires are 30x9.50/15's. That puts the top edge of the tire about 3/4" above the fender lip. Rides good and still can pull my boat with out bottoming out. Good luck.
1949 chev 3100 3 window. 350hp/327/m21 4 spd, 12 bolt rear, power brakes, 3" dropped axle from Sid's. Disc brakes next.
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