Are there any difference in usdm connecting rods and jdm connecting rods cause one is marked p72 11(jdm) and the other is marked p 72 13 (usdm) does these numbers mean any thing and will i be able to use one of the usdm's connecting rod in my jdm block?

 

Not that I know of. You should be fine with those rods. The differences in the USDM GSR and the JDM GSR isn't the rods.

 

ok thanks just wondering though were is the difference in the crank of the pistions?