273commando engine dress up wiw

I could be wrong, but are those vc's mismatched?(no offense). The one on left in 1st pic has a "shoulder" at base of stove pipe and other one doesn't. Better pics of plug wire holders would help. 67 had the pcv valve in a rubber grommet on pass side. For 67 on ds it had stovepipe with "oil" breather to chrome air cleaner. Air cleaner is for 65-67.
As a pkg $225-250 if vc's are one ps and 1 ds.