ozziemoggie, I think you are fine. Mine is P2116, 51 Plus 4 Flat Rad, 2 Str. My bonnet is rolled at the scuttle and straight at the front. It is according to my eye 44 3/8" long. Keeping in mind the darkness of the garage and that I havent had my morning coffee as yet.
I too have the rad fan very close to my radiator, however I have had an engine upgrade from the original vanguard to the TR3. I have attributed the lack of space to the larger TR3 motor? I was looking to increase the fan's cooling capability with the Macy's Garage Hurricane fan blade???
Cheers,