My two rough boys, gonna be working on taking the M52TU out of the e46 and swapping it into the Z3, more than likely with a turbo too. Figured I'd make an
BMW M54 M52tu M52 External OIL cooler+radiator+adapter+oilset fullset conversion
BMW E30 E36 E46 - M50 M52 M52TU M54 TURBO KIT - HIGH POWER SET - FTWL MOTORSPORT | eBay
Bmw E46 Z4 MS42 MS43 M52TU M54 PnP ecu plug and play standalone ecu RM racing Electronics
Amazon.com: maXpeedingrods Timing Tool Kit for BMW M52 M52TU M54 M56 6 Cylinder Engine Camshaft Alignment Timing Locking Tool Set, Pack of 9 : Automotive
D900-253TU - Dinan Stage 1 Performance Engine Software Tune - BMW E46 323i Sedan M52TU | Turner Motorsport