Are the 73-87 Suburban and the single cab long bed the same size?

[Hazieview]

I was wanting a good 4 wheel drive camping truck.

I want the vehicle with the most room on the inside.

So is a 1973-87 chevy single cab long bed with a camper on it the same amount of interior room as a gutted 1973-87 suburban? (I'm talking from the front seats to the rear doors/tailgate.

Also where do you get the 'camper' cap for a single cab longbed?