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Lift jack pattern
The correct hole spacing vertically is 2 1/4" inches both front and rear with 3/8" holes. 3/4" round stock as the support rods. Depending on individual application you could use all thread through the entire assembly or use 3/8" studs into the lift jack itself and studs or another attaching method behind the bodywork to anchor the support rods. The distance between centers on a 289 in front is 30". For 289 & 427 in the rear is 31".
Measure twice cut once!
Rick
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