Congrats and welcome to the loader club
. Boy, it sure does look like a Johnson. Hopefully you won't have to do too much modifying. The bars going back to the rear axle look long, but you should be able to shorten them and put a bracket around the rear axle. What's the distance between the front brackets? Will the 1450 fit between them?
Overall, the loader looks to be in great shape! Congrats and can't wait to see your progress.