I'm planning a loader build for my G154. Everything seems straight forward but I'm unsure how to build the sub frame for the uprights to bolt to. I have seen a lot of pictures showing the sub frame bolted into where the mower brackets bolts to but nothing that shows how they attach the back of the subframe. Do they tie into the front lower 3 point hitch pivots?

Any info would be great.

The plan is to move my model 1949 blower to the rear and have the loader on the front.