The British Army Bell 47 G3s certainly do have have bigger canopies than the G4 & G5 that I fly. The G5 is significantly smaller.
I've heard a tale of one G3 carrying pilot+4 in Borneo in a desperate situation - 3 in the cabin and one on each litter kit. Anybody able to expand on this? I bet the MP Guage went round a few times ;o)