Just spent all morning at a starter motor specialist, very helpful guy, he went back and forth looking for starters to try against my flywheel. Found a vw starter hot of a polo that meshed OK but it would be difficult to fit, large sections of the bell housing would have to be removed and special adapter and distance pieces made. Eventually we found a starter from an old rover 820 auto, I was told it was an anti clock starter Iwill check it all out tomorrow.
Ralph