My 360 build

Just my two cents, grab one from a Magnum truck. Way cheaper and it'll crank it no problem.
@dartfreak75 dont buy one of those. Too much money. If you can, go to your local picknpull, junk yard and get a starter out of an 80’s-90’s Dakota, Ram or Ram Van. They can have a v6 or v8, doesn’t matter. They all had the mini starters.
If they weren’t replaced in their lifetime, it’ll be a genuine nippondenso starter. I got one for 40 bucks last week at the pick n pull.
Yep....if no junkyards around, go to Autozone and buy a starter that would be for your the truck you describe as the old rusty one. Anything with a 5.2, 5.9, or 3.9 in it....the starter will bolt right up in your car. Anything 3.7, 4.7, 5.7 won't fit. Stick your old one back in the box for core return. Dude at my Autozone told me to do that....they don't care. Car sounds good!
That was the original plan. Unfortunately we don't have a pick n pull nearby. I was gonna pull the off my magnum in the white truck but the wiring is different I read you gotta buy a conversion or something for them. I have seen some of the older magnums with the 2 stud wiring. I will look for one of those.