No, mid 2001 all e46 switched from the 60 to 66 mm. This is part of the reason it can be tough for 2001 cars to figure out exactly what they have because it could be either.
Originally Posted by christkharris
I think the 66mm are for ZHPs, I could be wrong though. Contact Ruben at Desert Motorworks, he'll help you out.
04 IR 330i ZHP | ESS TS2+ SC | MagnaFlow "headers" | KMS 3.64 LSD | AST 4100 550/650| APEX ARC-8 18x9 | H&R front sway bar | Vorshlag camber plates, RTAB limiters | TMS subframe & swaybar reinforcements | UUC SSK & DSSR | UUC TM & TME | BW motor mounts | Dinan strut & shock tower bars | vaio 4-bolt oil pump