fuel injection would be a lot better (and looks like it'll be an option)
not only is the engine going to be heavier but the Chevy transmission should be as well. Yes, weight changes the original handling but some of that can be corrected
325 axles are smaller and weaker. would be better to use 330 ones and even more wise to use the M3 ones along with the stronger LSD. even M3s blow out the driveshafts and axles.
that diff is going to tear out the mounting blocks from that torque. reinforcement plates are a must in the rear subframe mounting area.
OE CSL WHEELS - OE CSL BRAKES - OE AUTOFOLD MIRRORS - CSL TRUNK - CSL DIFFUSER - AA SPORT TUNE - AA PULLEYS - BILSTEIN PSS9s - AS 40% SSK
CF CSL RACE LIP - NAVI - BMW PERF CF STRUT BAR - BMW GROUP N MNTS - GRUPPE M CF INTAKE - SUPERSPRINT - UUC SS BRKLINES, TRANS MNTS, RTABs - 4.10 M-SPORT DIFF