2016 Version of the Connecting Rod Scuderiatopolino 110mm,super H-beam. For high performance engines, the super H rods are 5% less in weight than the standard H conrods. The small pin end has now a groove to increase the lubriation . For Fiat 600-850/A112,18mm bush for Piston pin. With ARP 2000 rod bolts.
Maybe the block needs modification at the bottom of cylinder.