SD Stinger/ which Cylinder and piston?

[Nunyadam]

I'm working on one that has a bad piston and Cylinder and i need to order new parts.

I see them listed on Ebay but I'm not sure which one this guy has.

I know there is a difference in the wrist pin location height, but haven't yet found out which is which.

Cylinder Head Set Piston P CK19
Cylinder Head Set Piston U CK19
Cylinder Head Set Piston V CK19
Cylinder Head Set Piston M CK19

the engine is an SD Stinger
the number stamped on the case is S3605203

So who here has the answer?

 

[Greg58]

The only way to tell is to pull the cylinder off, and measure the piston pin distance from the bottom of the skirt to the top of the pin. From what I know there are two types of pistons, type a and b. The link below shows the two types.

http://motorbicycling.com/attachment.php?attachmentid=69519&d=1397927455