Was the 273 available in a 68 Barracuda?
In Europe (Switzerland) some Barracudas got a 273-2 bbl in 1968 and 1969:
High quality Swiss made A - Bodies
Swiss-made Barracudas 1967 - 1969:
1967: 273-2bbl and 273 - 4 bbl, no slant sixes.
1968: 273-2 bbl and 340s
1969: 273-2 bbl and 340s
Obviously 273 engines leftovers were still sent to Schinznach in 68 and 69; the engines were still painted red. There were no 318s offered in swiss Barracudas. Nearly all Barracudas were fastbacks, but there are few notchbacks (only with 273 c.i.) known. Convertibles were imported - not swiss made - but sold by AMAG; these convertibles got the US-motorization: 225 c.i., 318 c.i. and 340 c.i.
There were in total only 216 Barracudas (2nd Gen) built.