Low buck 360 rebuild

Hi looking for some input on a low buck rebuild or maybe build up for my son's
Duster, he's 21 and just starting out in life so as you might think moneys a little tight, so he's looking to put what funds he's got to the best use, and use as much of what we already own. and like most of us wants 10.5 sec street car on a maybe 13 sec. budget. Heres some back ground on the car and where were at so far.

The cars a 70 Duster originally a /6 with a 318/904 +disc brake swap out of a 76 dart. 8 1/4 rear end with sure grip and 373 gears. 26 inch rear tires and should weight in at about 3200 lbs.(best guess). The car will be driven maybe a day or two every week in the summer, shows on the weekend, and the late night drags once or twice a month, you know the one where he wants a 10.5 car on a 13sec. budget LOL.

here's what we have so far, fresh 360 block, 30 over KB107 pistons, zero decked. 10/10 reground crank, j heads 1.88 in 1.60 ex.(still need to be machined) eddy air gap manifold (performer i think, dual plane) eddy 650 vac sec. carb. Hooker headers 1 5/8 pri. The 904 will be rebuilt with a shift kit when the 318's pulled.

So first we're looking for some input on the heads, should we have the intakes
oversized for 2.02 or is it worth it on this type of build up. Note: heads will receive some minor port matching on the intake side.

second any cam suggestions to make the most out of this combo.

and last what stall converter.

Any other low buck input would be welcomed.
Thanks Richard