M5 Guru (>2000 posts)
Join Date: Aug 2007
Location: So Cal
Thanked 248 Times in 217 Posts
If you plan on going with the same oil system in the e46 chassis as you have on the e39, you will save yourself a lot of headache. There are couple other things one should know who is getting into this swap.
Front Subframe - you can reuse the e46 subframe, but will need to go with a dry sump
Headers - You will need custom headers. This can be done
Clutch work - the engine needs to be lowered do replace the clutch
Plus all other things that are considered when swapping engines.
Let me know when you are ready and ill get you all the contact information.
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