[GuidoK]

If you got an e46 kit it's wise to contact ess and ask if there are more differences if you didn't already have.

I also recieved an E46 kit (somehow they dont have different order#), and with mine (m54 engine) there were more differences than only the brackets which you only notice when building. For exemple the bolts to hold the belt rollers were longer then they should be, resulting in screwing the bolts in the cast oil filter housing too deep, resulting in cracking the oil filter housing (the bolt lug with thread). Luckily I have a Tig welder which can handle aluminium so I could fix that because that cast oil filter housing is a $400,- part....
I also needed another belt and some parts.