The bearings, seals, and coupler are identical. The pulleys are not. www.rollingperformance.com
is another source, and the M90 kit is what you want for your M62.
The 94/95 M62 used a 2.85" pulley. You can beg an old 2.55" pulley from a 92/93 here if there are any available, or order one from www.pulleyboys.com
when his site comes back up. Just don't go smaller than 2.5". It'll be self-defeating.