Cheers Bilko,I thought that to,but when you look at the front mounting it’s right on the collar.Both of them have it in the right place.The difference seems to be the hump where the rear/top mounting is,the squarish pad coming out is stopping it from going in and the rear box sits at a different angle,I had a look at the parts list for different years and can’t find one like mine.It’s got me stumped. I think I’ll resort to some old fashioned fettling with a 2lb ball pein hammer?