Head question??

I don't know anything about all the calculations and such, but I've put 360J heads on a stock 318, using the 318 orig 2 barrel intake and parts house fel pro gasket. The engine ran much better than stock across the rpm range. I was told I'd be lucky if it had enough compression to even start. I'd do it again in a heartbeat just to get a little better performance out of a stocker.