Yep it's the short one that's worring me. The acute angle. I think mine is the same as yours Tony as mines is from a 220 turbo. Not sure if there's a difference with the 420 one.
It's a if the engine needs moving back a bit.
which would cause a whole lot more problems for example exhaust and maybe gear selector rods.
I watched Mark Evans or on of the other programs on sky. But he was in a similar position with regards to engine position and drive shafts. So he used some device to connect the flywheel of the engine via a chain to the driveshafts. And hey it worked. Wonder if there is such a contraption that is available or could be made. Will do some investigation.
I think this is the one I'm refering to. I know it's bike engine sprocket (included in the parts list) and driveshafts. Now only if there was some way to connect the pg1 using a chain system. Sprocker on a inner cv joint. Maybe taking rubbish as I'm no engineer!
Can't remember if it was a mid engined bike engine install.