He was asking about E46s..not E36. There was no 4 cylinder E46 in the US. The 99/00 E46 323 is basically the same mechanically as the 01 325 and the 99/00 328 is basically the same mechanically as the 01 330.

If you care about power I would reccomend the 328/330 highly over the much slower 323/325.