i'm confused
you're wanting to sell your m90 gen 3 supercharger to someone who has a gen V m90??
-the gen V found on the series 3 L32 motor is better than the ones on our riv's. if your friend is in need of a replacement blower, then your's would be a downgrade (hp) for him, but i see no reason it would bolt up. (LIM,TB, and blower swap)
or are you asking if the series 3 N/A motor will take a m90?
-the N/A blocks are higher compression so it will take tuning and other mods to make it work safely, but short answer; yes you can put a gen III m90 on a N/A block.
take a look at zzp's site for some how-to info on adding forced induction to a N/A motor.
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1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily