1965 B40 pushrod query

[chaz]

fitted the new piston and rings , then dropped the barrel on, go to fit the push rods , according to Ruperts book, the rods should be 7 5/8" long for the B40, so why has this bike got the C15 7 5/16" ones? we got the motor with top end removed and less a barrel , would a C15 top end have been fitted?

question, does anyone have a pair of B40 pushrods spare 7 5/8" long?

edit,, Drags have some listed for the B40 but 7 11/16" long?? why the extra 1/16"??