Re: lost
Chevy 327. Old automotive type points distributor with vacuum advance and all. which is OEM from Mercrusier back then.
The drive is also a II drive, long before the TR came out.
If you go up to the adults only sticky at the top of the forum, you can download a manual for the engine and drive. It's manual #1.
The chances of ever finding parts to fix the drive and other Mercuriser parts is going to be nearly impossible. Common things, like the ujoint bellows, and shift cable is NLA.
But it all looks original and from the 68 and 69 era.