Hello people! I've got a good old 1980 528i. Ive been refurbishing all of the wear components on the suspension and installed h&r 40mm drop sport springs and bilstein b8 dampers as well as ST upsized sway bars. Now what I've got to get done is the engine.. I've pulled the stock 500k mile m30b28 L-Jet lump. Would like to put an m30b35 engine in. Is there a way to modify my current bell housing to accept the motronic 1.3 crank position sensor? (I have the stock 5 speed from 1980) The donor b35 is from an 89 735i auto running and driving. Or should I try and find an L-Jet M90?
i also have a motoronic b35 in pieces available. Would there be a possibility of creating my own hybrid engine retaining my L-Jet system? I'm a young guy who's interested in these old dinosaur e12 in much need of some elder wisdom. Thanks fellas

- - - Updated - - -

Or just stick with an m30b35 and find the 85 only bell housing to take the crank position sensor? Thanks again to anyone helps or reads this