340 High Compression Pistons

What exactly are they making for you, are they copying an old piston design that's no longer available? How did you describe what you wanted... by spec's of old pieces or did you need to send them something to copy? I need to rebuild my 340 that's got cracked x head and damaged trw L2322 .030 pistons no longer avail.

Thanks

Im going to have custom pistons made that approach 12.1 compression
I have the money to avoid the heavy slugs we were once forced to run .
I was going to use the older style domes but the weight is a concern to me I even asked if some were for sale but Im definitely going with lite weight
JE
Ross
Diamond
Brand pistons.