Ok so my Ross forged pistons have a slimmer 1st compression ring then stock and need to find them. My options are to get the pistons modified (best for long run but expensive), block sand down the piston rings to fit ( free but takes a million years ) or find the slimmer versions.

My pistons are .030 over stock mustang.

My specs measured out to.

Piston = .048 -> what I need

stock ring = .057

 

Doesnt ssm sell the corect rings? or how about Ross?

 

I have tried to contact Ross but no luck yet. Going to make a call to SSM tomorrow.