There are other photos of Rams with this same modification. The engine is completely standard but the exhaust is routed out through the engine decks instead of the standard arrangement as built with two mufflers side by side just bellow the engine deck discharging through fishtails that are hidden behind the rear upper hull and discharge downwards.
The other photos that I have seen were gun tower conversions for towing 17pdrs and I had assumed that the relocation was to make hooking up easier but the photos Matthew has found appear to be ordinary Kangaroos so it may be related to the fact that all these Rams are equipped for the fitting of wading trunking. However the standard wading trunking did not require the relocation of the exhaust and was very similar to the radial engine Sherman design which never had the exhaust relocated.
David
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