You may have right with the forced induction, but the block is made of aluminum so it's not a realy good base.....but I guess the engine itself is big enough.... 6-pack with 2.5 liters.....its just called 323 because of the other manifold.
I can modify the manifold of the M50 engine and put it on the M52 in my car, my bro did this already to his bimmer.
The engines like to have more then 170 hp, it can have 186 hp if the engine is in a good shape.
Top-Speed is limited 230 km/h....good thing we can test it legally on germanys autobahns
A visit by Hartge should solve the Vmax limitation problem, also I want to put 2 camshafts in there.
If you don't know Hartge....check this YouTube - BMW E90 Hartge H50 V10 .....V10 of the M5 and 550hp, Lambo Gallardo is no match to it, saw it live in Hamburg while it pushed the Gallardo to the side on the Autobahn.

I load up some pics when I got it, it's fully loaded with all the fancy stuff you don't realy need to go fast....but it's nice to know it's there
It cames in Imola-Red, was build only 94 times in that colour and it's the Sport Limited Edition with M-Tech bumper and fender package, M-Tech suspension and short shifter.
Also some interieur gadgets and stuff from the BMW Individual programm.

M3 front swap, other rims etc will follow as soon I have money in the bank again

sorry for too much OT