<<I also do not have a vehicle that can tow a class 2 trailer anymore,>>
I would seriously doubt you need a II.
What I might consider would be to go to home defect/lowes and have two
4" x 6" x 8' timbers and have cut to your measurements
(ore-determined<G>). And some lag screws.
1 for mounting direct to front cross member & 1 to fit inside the floor
at the seat belt mounting holes. IF the bottom (6" side down) clears
body "skin(s), take the remaining 2, pre drill 4 holes in each and lag
screw them to the "short" ones. Then lag screw to front member and seat
belt mt. holes.
Use a engine hoist (rented??) to lift and place on rented trailer!?!?
Tie down. etc., etc., etc.