That is a strange throttle setup, I can see why you might have trouble with it.
Mine is about 5' 9" so it is a lot lower than yours, I would not have expected that much difference. It looks like there is a fender extension on yours that mine does not have, the cab may be mounted higher. My exhaust goes out between the frame rails, standard center dump manifolds.
Does yours have access doors behind the passenger seat and in the package shelf? Mine does for dipstick, oil filler and rad cap access. I see your dipstick is behind the engine, I bet the rad cap is back there on the tank. I might have to move my fuel filter, unlike yours, it is buried high up under the truck, beside the trans. Very tough to get to, same filter. I suppose I may never change it again...
I think your engine way forward of where mine is, my air filter is on the carb with plenty of clearance to the console. There is no hump in my floor.
I will try to get the same views of mine and post them to compare.
Dan