Cut Trunk Pan and Frame Rail For Mini Tubs.
I have read that some people believe that the frame rails do not need to be cut for Dynacorn wide wheel tubs. This is not true. You will cut the trunk pan and loose the shock absorber mounting point. The frame rails have to be cut and boxed.
The convertible has and extra bracket welded to the wheel tub that is not used on the coupe. Also, the convertible back seat brace is very different from the coupe. Other than that, minitubbing a convertible is very similar.
I tried to make a template to help me make the cut. I was not successful. The templates I tried to make were not a flat piece of cardboard. They had to bend around the curves of the wheel house and go up and down on the curves of the trunk pan. The template would have to be three dimensional. I think a template can easily be made after the wheel house is installed.
One of the previous photos showed part of the trunk hinge bracket removed. I left the upper part of the bracket where the torsional bars mount.
The convertible mechanism bracket was also removed. I broke the spot welds where I previously welded the two extra brackets and drilled out the spot welds on the B pillar. The spot welds give reference points so that the bracket can be later installed in the exact posistion it was removed.
The convertible rocker has a flange that is next to the floor pan. It has to be cut off.
I ended up just cutting a little at a time until the inner wheelhouse fit. The trunk bracket was my nemesis during the whole ordeal. It blocks the inner wheelhouse from fitting until the hole is completely cut. The photo below shows the bracket and the next cut I will make.
Eventully I cut the frame rail and trunk pan enough so that the wheelhouse fits. I bolted the inner and outer wheelhouses together.