Getting the floor plate drilled for the mounting screws, and test fitting the parts....
Bottom view:
Top:
Need to open up one hole for the base frame, missed that one by a little bit. Then get the spacer block under the motor drilled/installed, and add the angle-aluminum around the rim to hold the cab shell on. The cab is most likely going to be a wood frame clad in thin plywood, set down over the top.