yes mate,you where impressing me with the 0-60 of the buggy being blown around the garden with the old blower tis a sad moment you are driving me to drink now
Never heard of it done with bmw spares but have heard of IRS transplants being done using sierra rear ends. To be honest i don't think a well set up leaf sprung rear end works to bad on an old ford.
Is it coming from the rear (propshaft end) or front from the bell housing?? these are the two main seals that will need replacing & you can get them from any decent motor factor best to do them both if you have the box out.
my mate fitted my first kent cam & i did'nt rev as you should do when you fit a new cam to harden them & it only done 50 miles before it wore a lobe down so make sure you run the cam in when you've fitted it. can't help with fitting though im afraid