yeah the 273 goes well , my mother had a 68 GT convertable with the 273 4 bbl , I used to get her pissed off so she would floor the car , did superb burn outs !. It was much stronger than the 1970 318 she replaced it with , a much snappier engine , sounded better as well .
And really like your car dash looks great . So many cars , never enouh time or money !