i've got a 89' 535i manual and i love the car but i've heard/read that the e34 M5 is 10x the car ....

is it worth it or even possible to get M5 handling and performance out of an upgraded 535i?

any M5 owners on this board that could contribute some comments? thanks!

also, anyone know if there are any Alpina B10 biturbos in north america ...supposed to blow away the M5 (inlcuding e39 M5's) ....wish i had one ;-)