where the front mount bolt to block and x-member
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That is my truck, I used 1/2" plate with grade 8 bolts thru the front cross member. One big one and smaller, I thing the large used a factory hole and I had to drill the smaller. My engine location was dictated by the front drive line length which gives enough clearance at the back of the block for removing the distributor and valve covers and accessing transmission bell housing bolts. I would recommend adding a restraint from the block to the frame because the stud mounts do let the block move quite a bit which can crack the aluminum bellhousings if you use the transmission mount.