difference between these 2 engines?

[1972BlueC20]

nah I'm not nervous about putting an intake on, just nervous about the un-mating and re-mating of the tranny and engine since I've never done it before.

I can afford either engine listed above, just trying to figure out which engine is best....I already have a brand new edelbrock intake, but I haven't opened it yet so I can take it back if I don't end up using it.....so I have options on that.