Later model hoods will fit. Most folks won't know the difference between the hood bracing. There are subtle differences in the sheet metal stamping on the intake side. The hood prop will work with the later model.
The 66-67 Duetto with its 1600 cc engine is pretty tight in hood clearance. Remember some of us have clipped the oil pan on potholes and DENTED the hood from the inside!!
The later cars, with their 1750 and 2L engines (about 5 mm taller) squeeze this even closer. Hence the changes in the hood bracing. This gets the cross beams a bit away from the front of the cylinder head - where the clearance is really tight.
Photos show the difference in hood frame braces. Note the indentation on the driver side in the 66-67 hood to clear the stock battery. I would be curious to know which hood was used on non-USA Roundtail 68-70.
If you'd only used 155/15 skinny old tires for your oil pan!
I'm feeling old. My wife likes the 155/15 tires because the car is higher off the ground than the other car with 195/60-14 Toyos.
Actually, I was on OEM tires, back in 1972. But i was also in downtown Boston, and hit a "new" pothole after a snow alert that was REALLY deep! Cracked the oil pan, barely got back home with oil pouring out!!
I agree that there is a lot to like about the light, nimble handling of the original Duetto suspension. I've driven full-up race cars too, and love that, but that early nimbleness was quite a memory.
This is the hood that came from a Duetto sold in Germany. By the Duetto register numbers, the hood is from a car which is 20 or so bodies from the end of the Duetto line.
It's going to get a later style radiator, so it has the radiator mounting metal retrofitted.