Howe chassis are designed to use a full size GM spindle that is available and accepts 3368 calipers with a RAP105038 hub on dirt, or the 3370 caliper with a PQP60476 hub on the asphalt modified. Spindles come sand blasted and painted with the ball joint tapers reamed 1.5" per foot upper, 2.0" per foot lower and the steering arms drilled for a 5/8" bolt.