Which heads?
High velosity is torque (small ports) think low end power. High volume is HP. think RPM.
The small port of the "teen" will get you moving from that stop sign/light.
I thing you will loose the spunk, or take off power, with the 360 heads.
with your combo i would do some bowl clean up and a high energy cam or a small voodo cam.
should wake it up nice with out killing the bottom end.
If you want to spend a little bit more.....put a 1.88 intake valve in it.
The 360 head will make more power but loose some of that bottom end, that it sounds like you want to keep.:-k
Internal combustion eng, like was build back it the day have a 2500 rpm window. you can have a eng that pulls from 1500-4000 rpm or make more hp and have a 4000-6500 rpm eng
That 2nt option would cause grate anger in a combo like yours.
the 360 head WILL WORK! but you will need do some changes to your combo (aka converter and gears) to get the most out of it.