I bought a summit racing sbc hei for $99. I figured “what the heck, this will be a fun experiment.” To my surprise, the shafts between the stock distributor and the sbc hei were the same diameter. I completely disassembled the hei and put the hosing on the lathe and started whittling away. Now it has the same dimensions as the stock distributor. It fits into the oil pump perfectly too. Now the only thing I’m stumped on is, converting it from an 8 cyl to a 4. I’m thinking I just remove every other point on these two stars for the magnetic pickup?