5.7 drop in info:
FRP57-3917-PA = Stock Bore 5.7
Molnar 6.242" rod, w/ ACL Standard size bearing required.

FRP57-3927-PA=5.7 .010" over
Molnar 6.242" rod, w/ ACL Standard size bearing required.

6.1 drop in info:
FRP61-4085-PA=6.1 .030" over
Molnar 6.242" rod, w/ ACL Standard size bearing required.

6.4 drop in info:
FRP64-4.090-PA- 6.4 Std. Bore
Molnar 6.200" DH6200TLB8-A rod, w/ ACL Standard size bearing required.

FRP64-4090-HC -6.4 , Std. Bore, ****High Compression****
Molnar 6.200" DH6200TLB8-A rod, w/ ACL Standard size bearing required.

FRP64-4100-PA - 6.4 .010
Molnar 6.200" DH6200TLB8-A rod, w/ ACL Standard size bearing required.

FRP64-4125-PA - 6.4 .035
Molnar 6.200" DH6200TLB8-A rod, w/ ACL Standard size bearing required.

Stroker Pistons:
FRP-4100+7
High Compression 6.2/6.4 based stroker pistons. Intended for Naturally Aspirated use only.
Pairs with Molnar SBC 6.200 rods, Callies 3.800" ***OR*** 4.000" 8CW Crankshaft.
Sold as a unbalanced assembly.

Stroker Pistons:
FRP-4100+3
High boost 6.2/6.4 based stroker pistons. Intended for serious Supercharged/Turbocharged applications only.
Pairs with Molnar SBC 6.200 rods, Callies 3.800" 8CW crankshaft
Sold as a unbalanced assembly.

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