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Old 05-01-2009, 11:17 PM   #1
FRENCHBLUE72
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Thinking of running 20's up front..

Heres what I have 1 1/2 inch section crossmember,2 inch bell tech spindles,strong arms and firestone bags along with a 275/55r20 tire.. I do not have the rims yet as I have no idea what width or back spacing to get any help would be great.. Also should I tub the firewall or is that really needed?
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Old 05-02-2009, 12:01 AM   #2
protrash64
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Re: Thinking of running 20's up front..

Although different years, suspension-wise our trucks are the same. I would say using 8 or 8.5'' wheel you would want 5'' to 5.5'' backspace. Im not sure how tall the 55 profile is but it will most likely be sitting against your inner fender. Im not familiar with the 67-72 inners. Prudent use of the tape measure would be advised.......
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