I wasn't aware that the 261 was even available in the 1/2 ton. Who knows? Maybe in Canada?
You got me thinking though bigmacdaddy. Wouldn't that be something? Come to think of it I have never checked the casting numbers on the block and have always assumed it is a 235. I guess I should check that out. I know it's the original engine but if it turned out to be a 261 it wouldn't be the first unusual factory thing about it.
My guess is that they just ran out of the right color paint (whatever color that is!! Blue? Green? Gray?)
Thanks for your input on this gentlemen. Because this is a somewhat unusual truck I want to be absolutely authentic in bringing her back to exactly like she was when she left the factory.