Set of four Connecting Rods Scuderiatopolino 110mm,super H-beam.Center to center lenght 112mm , for 903 and 965cc engines. If you use 18mm floated pin.
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 lubrication . 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.