67 383 2 barrel specs

Here ya go longgone, if the heads are original they should be the 516 or 915's, should have read the chart.
http://www.mopar1.us/CHRY-67.rtf
The 906's didn't come out till 68 for the 383 but heh ya never know. If the heads are the 516 or 915 closed chambered and are factory stock they should have the 1.60" exhaust valves that can be upsized to 1.74" which all the heads from 68 on had mind you these were open chambered, eg. 906.
Terry