I have a 83' 528E and just bought a 88' M5 last week. Oh my GOD!! You don't need specs to tell the difference. I'm new to this stuff but isn't an M5 a 5 series body with a beast of an engine anyway. Sure there's other stuff but... Hi all, I'm from the e28 board (87 528e) & just have a couple questions for the M5 crew. What are the performance numbers for a stock M5? Are you running stock or do you have mods to boost performance? Does anyone have a e28 with the E34 M5 engine in it & if so what kind of performance numbers is it capable of, seems like it would be a beast! That's all for now, Thanks much! Smitty 87 528e ex 93 325is