My bad for forgetting about those needle in a hay stack motors........63 to early 65 fullsize fords with a 289 had the 5 bolt,true...good luck running across one of those though.
To the original poster though.... I would just look for a newer 351w to swap in place of the 302. Your trans and flywheel/flexplate will bolt up and all 351's are the same 28oz balance as early 302's. The intake wont swap over but the other 98% of the parts will. Easy upgrade for a nice bump in power.