the commando engine denotes the rear cut out, not the Formula-s. I have 2 67's. Both are 273 4-bbl engines. One is an FS the other one non-FS and both have cut outs.
Its a 65 273 Commando car, not a FS. It does have the rear cutout. The cars did not have the res and tip by the time I got it, but my uncle remembers it when the car was new(er). Bought used in 69
