Cams for 318's

My dad's 86 van was same way. Block was capable of being a roller cam but was not.
On the 360-2 cam in a 318
I have done this, and along with a magnum head swap it made a HUGE improvement.
Yeah I know, magnum head conversion means 1.6 rockers vs 1.5s but I think I am about to try it on a 318 that's getting 302 heads, with stock 1.5s. if it makes 1/2 of the difference that I had in the one I did the magnum heads on I'll be happy.