'64 Dart, '73 Scamp. What's the difference???
I pulled a mini-starter off a RAM truck at PickNPull for my 273. Should fit a 225 fine. I fondly remember how easy it was to change the starter in my 69 Dart 225 - standing up, bolts in plain view, ample room to swing the wrench. Think how easy a small starter half the weight will be. It also sounds better.
I recall paying $10 with the battery cable (leave stuff on and they often don't charge for it). You can get rebuilt ones on ebay for ~$50, even less if you keep bidding. I have 2 but haven't tried them yet, so don't know if Dan is right about the quality.
If you strip a RAM at the junkyard, while under there you might grab the power steering cooler on the side frame. I put that on my 65 Dart.