any benefit to swapping heads?

not mountains out of moleholes
you do not want the dreaded BOSS 302 syndrome in your mopar
you want instant response and torque when you hit the gas
the 10 hp he would gain up top without headers is not worth it
really want to wake it up take those 2.02 valves and put some 30 degree seats on them and cut them down to 1.94-`1.96 (whatever it takes to get some margin)
then figure out the difference in curtain areas


30* seats were stupid back in the day. They are even more stupid today. I wouldn't put a 30* seat on a picture of a lawn mower.

A 2.02 valved head won't kill the bottom end so bad you can't drive it. That's rediculous.

The OP doesn't need bad info.