Need Help! Starter issues.

What is the 17466 original application?
I bought the first one through a friend. They have a family business that rebuilds starters and alternators. They have been in business for like 50 years. It' the same starter used in the 90's Dakota's that I've heard lots of people use with great success. It' also the recommended direct replacement for the original 340 starter, it' just a different configuration referred to as the mini version.