Yup, you're right about these Arias pistons, made in the mid-70s but typical of the quality of that time period and a very similar Alcoa forging blank used by Venolia. Nonetheless, a pretty good piston considering and tons better than a high silicon/boat-anchor TRW-type. So, is there a 'set' dome configuration? Pin boss oiling, accumulator machining, etc? Thanks...wb
