[PNJSNAK]

PJ
For me, Pete Clark made sure everything on my rolling chassis was square.
I mounted the motor /tranny then measured and ordered my driveshaft from Denny's.
Mounted the driveshaft and then picked up the body.
Once I had the body I positioned it on chassis to what looked the best to me, tire fit in the wheel wells front to back and square all around.
Once I was satisfied I put 4 drilled holes thru the body interior area and frame and used the large pop rivets as dowel position pins.
This way I could take the body on and off as needed before I was ready to bolt it down for good.
Don't forget to put the felt material on the top of the frame rails before you first put the body on the chassis.
I did this 15 years ago and shortly after A&C had done minor changes to the molds, but no changes to the basic body shape. I believe it was to the wheel flares, hood and doors.
The only adjusting I ever did to the rear end was adjusting the angle of the pumpkin using the adjustable 4 link tie rods.
You will need 4 people to lift the body.
Good luck, take your time.