Ive always wanted an e30 m3 since i was little. but now that i graduated and got a real job with money im deciding on which m3 to get, e36(faster) or e30(better style). so i did some math with hp/lb and NM/lb with the e30 s50/52 swap. all percentages are baselined on the e30 s14 m3:::: e30/s50 24% hp/lb, 79.4% NM/lb...... e30/s52 24%hp/lb, 88% NM/lb........ e36/s52 4.5% hp/lb, 60%nm/lb.
so what i see the you get a decent hp boost but a real torque boost from the extra 2 pistons
now i just need to find one