here i have a set of four 1641 barrels but only three pistons i bought these earlyer this year with a few other bits and bobs as i was going to build a 1641 engine up. the bloke i bought them off told me he had fitted them to his engine and done around 100 miles with them fitted, when he devolped a bad oil leak when he stripped his engine down to fix the oil leak he dropped one of the pistons and chiped it so he threw it away and just bought a complete new set. ive decided iam never going to use them so looking for £60 for the set or swap for a glovebox lid and liner collection only from bedford numbers on the pistons are 86.95 sp0.05 a numbers on the barrels are az10a cheers