Don't know which way to go?

[sam's 72]

My step son is turning 16 at the end of the month, I told him I would buy him a car or a truck for his birthday, if he keeps his grades up, well his grades are very very good. So I ask him, what he wanted and he told me he wants my 72', man this truck is very very clean, all new interior. the engine is a 305, which I hate, I am in the process of trying to get my 383 finished. Now I want a 72' step side, but I am haveing problems finding me one, I keep going back and forth with this, cause I know what I have now! Hell, I don't know which way to go on this. I know it is an indivisual decission, but I was going to see what you guys think??The step side truck must have ac in it, I want it to be factory, not vintage.
Sam