Magnum vs LA compatibility

Can I still run a mechanical fuel pump?

@Bobzilla. Explained everything expertly.

I used a 1970 timing cover that has provision for mechanical fuel pump and has the timing marks on the passenger side (not that it's easy to see with the LA power steering pump, lol).

I started with an electric fuel pump but discovered my autistic grandson couldn't ride in the back with the buzz of the pump ) I even used rubber mounts). So I bought the cam snout extension from Hughes Engines and switched to a mechanical pump. The cam snout extension is a little tricky, but if you take your time and use Loctite, you'll be fine. It's been probably 1.5 years and no problem and I drive it nearly every week.

Just today, I replaced the fuel line so now I just have rubber on the two ends.