Weight M20, 50, 52, 54 75mm crankshafts and rods

[FRODADDY]

Dear all,

I am starting to source parts for a 2.5l race engine.
Therefore I would like to know which of the above cranks and rods are the lightest.
Please only post real world numbers, not the ones out of the ETK.

Thanks for helping me out guys!

[digger]

arent the M50/M52/M54 b25 the same p/n? 11211432275

the n52 with a custom snout may be the lightest, i thought i saw someone do it using a diesel crank