Thanks for noting that. Fortunately the Cosworth suspension is a fairly simple McPherson setup with no notable tricks. We recently made calculations to alter the subframe mounting points of my son's Celica GT4 for increasing caster angle, a royal PITA compared to Cossie. I haven't researched how much room there actually will be to play with mounts, at the very least with (custom?) offset bushes and full uniball arms, but the 3dr geometry seems like a good starting point and fortunately there are off the shelf solutions to tweak the track arm angle if there are any bump steer issues once everything else has been said and done.

I wouldn't imagine the suspension becoming a major problem, depending on how the front/rear roll centers will interact with each other in practise, of course. I'm no by means trying to re-invent the wheel unless it's absolutely necessary and knowing how many quick 4x4:s and Escorts are out there, it shouldn't be.