Here is how mine was lowered. From experience mono leafs are too soft. Just my opinion. http://www.jalopyjournal.com/forum/group.php?do=discuss&group=&discussionid=16547
new eyes for the old girl......timing done by top ace mechanic...... he said the heads were bad....351 ford..... cam down and crank up......his is up and up..........scumbags.......