in my 96 silverado i used multi position motor plates & used the middle(standard position). 1" forward or backwards the headers wouldn't fit. i used the f-body 4l60e which i think the mount is a little different from the truck 4l60e. my frame had 2 sets of holes for the trans cross member. at first i moved the trans cross member to the rear holes but the stud on the trans mount was right against the slotted hole in the cross member, it fit but was too close for my liking,so i used the forward hole on one side & the rear holes on the other & my trans lined up perfect.


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