What are you using for shifter and brake lever boots, my Low Cab Forward seems to need a different boot for the SM420 than the little trucks, the hole and trim ring on mine is oval and from what I'm seeing from venders they look like a round mounting ring.
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
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