Ever see what heads where on your late 80's engine? Casting # can be found under the valve covers. Pertronix has a good points conversion.
DODGE 5.2L/318 MOPAR SMALL BLOCK LA PerTronix Ignitor III® Solid-State Ignition Systems
I like this cam for your situation.
20-221-3 - Xtreme Energy™ Hydraulic Flat Tappet Camshafts