OK, so heres what I've found. The mounts seem to be solid blocks, so no chance of injecting any 'helper' polyurethane, but since they are such simple little beasts, it looks like the easiest method is going to be to smash the rubber to bits and cast a block of poly onto the hardware, not before getting hold of a new standard set before i balls it up

Can't believe all of you seem to be happy with the soggy old mounts! Has nobody had a pop at this sort of improvement already? Particularly since I am sure it is the cause of my transaxle mounts expiring quickly, and that's a job i could happily avoid haha! Also seems crazy that I can only find 1 commercial outlet for 'performance' mounts and they have no details on durometer options or anything, since these mounts span loads of alfa's. Anyone with any knowledge on this please let me know! Cheers