"My ultimate question is - is there any advantage/disadvantage to putting the M52 intake on the M54 engine."
Without the intake and a few other external details, the M52B25 and M54B25 are the identical 2.5 motor! So in other words NO. You will get the same engine you started with, so you will eventually run into the notorious Tbody problem of the 323/328...
Specialized in BMW recycling, all OEM used parts
Up to 90% off new cost!!!
Most models E30 E36 E46 E90 E92 E93 E28 E34 E39 E60 E61 E32 E38 E65 E66 X3 X5 M3 M5 Z4 F30 F32
Etobicoke location now open!!!!
Call 11-8PM 416 821-2578
New inventory daily. 70+ cars in stock!