You must be referring to the rear lower shock mount. It sticks out toward the rim. Of course there's no issue with the stock 4-1/2" wide rims. The 9" rim you're using is quite a bit wider than stock. Is there any excess thread sticking out of the nut that you could trim off? If not, you'll need to switch to narrower rims, or different backspacing.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.