360 Head Question
For the price of new gear (Rotors) on all 16 valves, it is cheap. You can go right to moPar for OE parts. Locks are also cheap. This should not dent the budget in anyway.
The heads themselfs are very good heads. While the may not able to be ported out as far as other heads for a big cfm flow, that should not stop you from there useage. There should be no issue to run into the low 12's with a stock port 2.02-1.60 valved head.
Just rebuild them right. Aftermarket valves like ferra race valves are also a reasonable priced and worthy upgrade.