Jon, first, welcome to the site. Second, I see that no one has replied, so I guess I'll go over this with you.
The 1967 Camaro L30 "Production" spring was part number 3904245. At least that's the only number I can find in the parts manuals. This covered ALL
1967 models with a 4BBL carb and the M35 Powerglide transmission.
The AIM calls out that same part number (3904245) for the L30 or L48 "kick down" rod, so it appears you'll need TWO of those springs. This is a lime green spring and was also used on other models as well, including the 1967 Corvette. The best price I could find was from DOC REBUILD
I highly recommend Doc, but be prepared, he's not the friendliest person in the world! However, if you use his on-line store, you shouldn't have any problems.