if both the heads and intake have the small ports,yes

when you use a 360 port size intakes on a small port 318 head,I would not use them,to mutch chance of a mix-match of port size and a leak.

but the mix-match of the 2 size ports is no biggei from a performance stand point,you wont notice it on the street.

I would use a fel-pro 1213 SB intake gasket set,it has the heat cross over block and should help keep the alum intake/carb cool.

I like the mopar ATF/RTV or permatex copper RTV in the 4 corners and a light coat on the cork ends seals

let it cure over night for best results.