308 heads at summit

Chrysler LA Small Block Assembled – New 318 LA and Magnum Castings Avail. (Add $200.00)
ARO-CY-SB318 1968-1987 318 A-Engine Heads, 1.88X1.60 Stainless Valves (2.02 Int. Valve Not Available) 67-70cc Open Chamber Design, .509” Lift Springs........................... 399.00

ARO-CY-SB340 1968-1987 340-360 A-Engine 1.88X1.60 SS Valves, (2.02 Int. Valve add $100.00) 67-70cc Open Chamber Design, .509” Lift Springs, 160cc In. Port Volume........ 499.00

ARO-CY-SB915 Head-Same Features as Above 340-360 but Utilizes Select #915 or #587 Castings with a Larger Intake Port Volume ...
.................................................. 699.00

ARO-CY-SB202 New LA Heads 2.02X1.60 SS Valves Hard Ex Seats 64cc Open Chamber 166cc Int Volume 59cc Ex Volume .525 Lift Springs ................................. 895.00
Just what is it you are quoting, here?