Harbor Freight has one for about $5-
I've heard a couple of degrees downward of parallel in a truck to compensate for when the truck is loaded.
Be sure to measure from the same side of the engine and differential- Negative on the driverside is postive on the passangerside...
'51 Chevy 1/2 ton w/'62 261, HEI, offy, fentons, dual carter/webbers, t-5 & 12 bolt posi
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