Hi guys I'm looking for some advice on increasing the performance 312. I have a combo in mind and was hoping to get some feedback from guys more familiar with y's. The base for the build is a 57 312 with the g heads and a b intake. The combo i'm thinking of is .030 over with mummerts pop up pistons on stock rods with a stock crank, i'm looking at mummerts y 292 s camshaft. Mild home port clean up of heads and intake with a 750 holley on top. Its going in my f250 and wont see much street use. I'd like to see 325 horse and 350 lb ft out of this engine. Any advice would be greatly appreciated thanks in advance

1962 f250 currently heartless
1961 country squire 292 3 speed
1963 galaxie 390 powered
1976 f250 4wd 390 powered