Frame connectors on a rotisserie car?

im putting subframe connectors on a 72 dart project now that its a bare shell .......if you look at how the factory assembled the body they used a jig that cradled the body by the rockers and as it came down the assembly line they welded panels on ......if subframe connectors would have come factory...they would have done it in the begining as they welded all the other panels on.

it shouldnt matter if your doors are on or off, if your car is flexing so much that the doors wont fit right if not put on first then you have much bigger problems than sub frame connectors can fix anyway....and thats why the doors have such a big adjustment range

i am putting jack stands on the rockers and adding subframe connectors to a bare shell.

these cars all have a tolerance anyway .....and thats an insurance policy.