Painting my slant 6

i have a question regarding painting my Mopar 225 before putting it back in the car. I have the motor on a stand right now and it has been wire brushed, sanded, and wiped ready for painting. The head and block are intact along with all the internal parts like the pistons, lifters, rockers, pushrods, and crank. My spray painting issue is that my driveway is sloped so that i can't wheel the engine and stand outside to paint it without a lot of difficluty. So I was thinking that maybe I can hookup my dry vac to a clamp and turn it on while I am painting so it catches most of the over spray and then I can get it done easy. I don't want a ton of overspray on everything in the garage. Any other suggestions?