Thanks everyone... I bought 11:1 JE S52 pistons. Using the wristpin as a locating tool the S52 piston is already 1mm shorter than the OEM M42 piston. I have decided to weld and offset grind the M42 crankshaft to M44 stroke length...
Thats possibly the silliest thing I have ever heard.
You go buy JE S52 pistons and then cheap out and weld and grind your old crank.
And even at that, your only planning on getting what an M44 crank will give you out of the box?!?
Suppose, I can't really talk though considering my M47 crank was free inside a complete engine that just got burned a little when the cat went on fire:p