Airfix Churchill Crocodile tank 1/72 02321

[T-21]

I'm new to AFV. Does anybody know which Mark of Churchill this kit depicts ?   Markings are for T251625  of 34th AD  107th Regiment Op Overlord  Normandy June 1944.  I wish to add an aftermarket gun barrel  Master GM-72-006   is this correct ?  any help on detailing or kit improvements gratefully received. 

[gamevender]

The Airfix Churchill in all it's releases, gun tank, bridge layer, Crocodile, is the old 1/76 Mk VII dating from the early 1960's. However, with a little effort, it can build up into pretty nice model. There are a lot of little details you can add/dress-up, but the two biggest flaws I know of are that the cupola (commander's hatch) is not correct and the turret is missing it's "skirt" bulge at the bottom and the "chins" on the turret front. I swiped a correct cupola from the Matchbox Comet kit and the bulges and chins are easy to build up with either sprue or putty. I have been told that the kit cupola is correct for some Churchills, but all the photos I've found have the same one as on the Comet and it looks better as well. 

 

Edited June 28 by gamevender

[T-21]

Many thanks for the advice and tips.