I"m pretty shure Chevrolet did not introduce the 350 V-8 until 1968. All 67 Camaros either RS or SS used the 327 (commercially) If a 350 was an option, in 67, i'd be a rare option. If I recall, back then Base engine for Camero were 250 CI inline 6 cyl. Upgrades were 283 V-8, 327 V-8, 396 V-8 and ...