Heres a simple question, I am just about to aquire a a bigger RV8 4.5L, for my cortina, bored and re-lined with 2 litre Cosworth pistons, just to do a final check, has anyone got the part numbers for 2L cosworth pistons and the next size up, as I intend to run megga compression [13.1++] with gas at a later date, forgings are essential as I dont want the pistons to end up in the sump!!!!