Both units will fit gm 454 350 reverse or std rotation.
The 8360 was a designated dyno unit so does not have a ton of hours on it but the time it does have on it were high rpm. The gears on both units are in great shape. I couldn't fiND the cap but I'm pretty sure I have it.
Here are pictures. I also have a set of msd 8.5 superconductors that are used, no leaks. One boot has a melted spot from a header. $40 for the set with one of the distributors. Coil wire is not msd.
Msd




Mallory
I put new wires on the mallory and cleaned it up a bit. Cap and rotor are excellent shape. This is a marine dizzy but works for both. I put the cap and rotor on last season and only have about 20 hours on them.



[

Both units are a bolt in rtr setup.