R975 Radials

[tankbarrell]

That's not really true. The British Army had nearly all of the M4A4 production and nearly as many M4A2. The radial tanks were the least preferred of the lot. Whilst many M4A2 and M4A4 were used by all the Commonwealth Armies, they were still the most common types in British formations.

[Perry Kitson]

To answer David's question, the last radial engine Sherman was a M4A1(76)W that was accepted for service July, 1945. I believe a Baldwin production vehicle, that just happens to reside north of Detroit in a private collectors hands.
Canada used M4A2's and A4's. An interesting note on the A2's is that the "Holly Roller" of the First Hussars here in London, and "Bomb" of the Sherbrookes had sequential CT numbers, both now monuments.
The A2 engine was by far the best performer off road, with a combined torque rating of almost 1800 ft/lbs. The biggest reason for the US not using the A2 Shermans (other than those used by the Marines) was their distaste for supplying two fuel types. The US preferred the Ford GAA as a first choice, the R975 radial (in the M4/M4A1) as the second.

Perry