i have the rfactor file for a e46 m3 somewhere i could check what's faster in terms of ratio. quarter mile i think 4.10 might need the extra shift.
the roadster is definitely slower stock (bmw made sure, they put 3.15 diff with 5 spd) but with the 3.73 its considerably quicker and fun as shit off the line. i still think i prefer my newly purchased e46 m3. it is a lot more on insurance though
Hot: 2001 Estoril M Roadster
ZCP 19's, ZHP knob, JL 8W3
Cold: 2002 TiAg M3 6mt
ZCP 19's supersports, ZHP knob, UUC short shift GROM, OEM 18's w310's,
http://absolutehid.ca hid kit