125 has studs and nuts at the base of the cylinder with seperate bolts that hold on the head. 160 has long studs the travel right through the cylinder and the head secured by nuts.

Having said all that I not sure what configuration was in the VC125, would be a Series 70 engine perhaps with a redesigned head to match the 160.

Last edited by paul_c; 06/05/18 08:11 AM.