Flying 240D pulleys

[Stevo]

Last night my daughter, and a visiting friend were driving home from a movie when, going 35 or so with my '79' 240D when they thought they ran over some debris in the road. Shortly they lost power steering and she started to heat up. They stopped and found NO belts at all in the forward part of the engine compartment in fact no pulleys to drive the belts . By the time I got on the scene they had found the missing pulleys along side the road. I spent this morning putting things back together with 3 allen bolts from my parts car which ("80" 240D) has 6 bolts holding on its pulleys as opposed just 3 on the "79" (there are only 3 holes in the pulleys too). I wonder if other folks lost pulleys and they went to a 6 bolt system after '79". 2 of my bolts were sheered off but there were 6 threaded holes in the harmonic balancer so I could rotate the pulleys accordingly. Might be something to check on next time your crawling around under your early 240D. Has this happened to anyone else out there?