Hello from Bulgaria!
This is my first topic here, and I have really big problem!
I have Honda Civic Coupe (EJ8) with B18C4 (EDM) engine (which is 100% same like B18C1 USDM)! I have problems with my connecting rods after 12000 rpm's and I have to change them. I buy forged connecting rods, but my budget is not big so, I find pistons from Honda Integra B18C6 (P73) (EDM) (which is 100% same like B18C5 USDM) to increase my compression ratio! But the forged connecting rods are designed for forged pistons (they usualy have piston pin locks)! So I've decided to modify my P73 pistons (obviously I must cut a little bit from the piston pins to make place for pin locks)!

This is my piston pin locks!!!
So my questions are:
What is the radial clearance of piston pin in the piston? If there is any? (I mean from left to right and from right to left pin lock!)
Where I shoud dig into the piston to make place for pin locks (how deep?) (Detailed pics from forged aftermarket pistons will help!)
I think I'll use pin locks for 22mm piston pin? (My piston pin is 21mm, is it better or not?)
What is the problems (in future) with my insane project and how I can avoid them?
Any information, any measurements and any shared experience will be welcome for me!

P.S. I'm sorry for my bad english!