These first 3 shots are where I intend to cut the roof pillars.

The A and B posts, which form box sections will be split to create a stagger for rejoining. This basically involves making a cut on the outer post then another on the inside a few inches lower. The spot welds are then drilled out and the whole post is severed. On the C post I'm making 1 cut from the rear screen aperture to the seam, then two cuts on the part of the pillar that forms the rear of the side window.

All will become clear later.

A bit of hacksaw work later and the roof is off.

The appropriate amount of metal is then removed from the A and B posts for the size drop you require, in my case it'll be 65mm. Care needs to be taken as the A pillars will need less metal removed due to the angles changing when the pillars are lined up.

The C post will be dealt to later.

As you can see I put a rough frame inside the car to keep the shell square and to maintain door gaps etc.

First bit to line up is the B pillars. Being a vertical post positioning is obvious and gives a good starting point. Because the pillars taper inward from the waist line to the roof I found it necessary to make a cut on the outer bottom part of the pillar, about halfway through to relieve stress in the pillar. You might be able to get away with this but for the little extra work it seemed worth doing.

In this shot I've done the welding. Of course I did a heap of measuring and clamping of all the pillars prior to this.

The front pillars have quite a stagger which all needs to be lined up. The only way I could find to do this was again to make some cuts top and bottom that went halfway through the pillar. It's then a case of puling and pushing until a satisfactory join is achieved.

Turned out my cutting was spot on as after a bit of persuasion it all came together nicely.

Here's the result.

Pretty exciting now as I can see how the car is going to look. There's a nice rake on the screen and the whole shell is starting to feel a lot more solid again.

OK, I've lost some pictures here so I'll try and explain myself.

Firstly I removed all the seam to the waist then made the cuts that you can see at the top and bottom of the rear panel. This allows the two pieces to be pulled together, marked and then the excess removed. Once done this panel can be clamped and tacked.

Finally the missing section cut from the rear side window can be offered up, marked, trimmed and tacked in place.

Sorted!