Double check my engine builder please 340 stroke

Those ic744-030 5cc dish pistons have the same compression distance as the 20.5cc dish pistons.

Those will not put the pistons 0.10" down in the bore. Unless you are using 6.00" length rods vs Mopar 6.123" rods. I guess he could have done this??

If so, Certainly not the typical way to go. If so, he's not going to get any quench and getting slightly less favorable rod ratio.

Maybe he calculated with the wrong rod length???