Looks like the original 67 Chevelle pan 3907137 verified buy the 68 P&A (68 Camaro, Chevelle 396..3929257 part# sub.) and again verified buy the 69 P&A (65-69 Chevy, Chevelle, Camaro 396..3958657 part# sub.) shows that the same pan was used on all 67,68,69 Camaro BB's, except for the 69 HD 6qt pan 3879633.
I think we can now assume that dipstick 3925520 w/purple tip is correct for the 67 L35 & L78. The 67 dipstick should look like the 68,69 except shorter & w/purple tip.
The tube 3899640 is correct for the 67 L35 & L78. I know the 67& 69 P&A's say (exc. H/Per) but there are no part numbers to support any other 67 dipstick & tube combination. That would change in 68,69 with the addition of AC for BB's.
Because the 68,69 dipstick 3925599 w/yel tip did not have the part # on it, as John Z has indicated, I believe the 67 3925520 did not have one ether. GM would probably use the same dies on the 67 and the 68,69 stick but make the 68,69 longer and change to the yel. tip.