If You're tight on cash, (good headwork with o/s valves will be a good move no matter what combo You decide on), a couple of members have had complete Super Six
set-ups for sale. If they have the brackets & linkages incl. kickdown arms/rod, probably the best value for the "little upgrade" class of improvement. Get both mannys so
the choke set-up is there & correct, You may have to add a power source if it has added electric assist. Headers can come later, but a little change in jetting may be needed,
turning the intake "cold" will lean out the mix.