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I think I burned my Edelbrock Proflo ignition box up somehow as I have no coil spark. Rather than spending the money on a replacement, I think I could upgrade the box for the same money. It's for a 427 sbc, solid roller cam, 10.5:1 compression motor with an upgraded speed density efi setup. HEI style distr/cap(converted to hall effect).
IF you can, use a stock HEI computer controlled, if not....use the old mechanical one....good as any and better than most.....
computer-controlled HEIs aren't hard to find. Some F-body cars in the late 80s and early 90s even used a small-base unit that gives some more clearance than the usual HEI monster head.