I would fit a hex head bolt in the round holes instead of a carriage bolt. Grind a little off of one of the hex flats just enough to slip the bolt in the hole. The bolt head against the welded spacer will keep it from turning.
1957 Chevrolet 5700 LCF 283 SM420 2 speed rear, 1955 IH 300U T/A, 1978 Corvette 350 auto, 1978 Yamaha DT175, 1999 Harley Davidson Softail Fat Boy
| 
