A solution to the clutch issue is needed first though.
Apologies if this has already been checked out but could an A2 solid flywheel be reworked to take a larger dia clutch plate and cover.
I've never seen the solid and DMF flywheels side by side but assume they both have the same dia ring gear. If that's correct then there may be enough meat to increase the friction face dia and re-tap the clutch cover mounting bolts.
Cheers Spike