273 Numbers Matching car. Should I rebuild or swap engine?

WELCOME ! AS you can read by the response there are as many opinions as there are members . I have been in the Mopar parts business since 1984 and heard thousands of people recite both sides of the issue . As far as value goes , changing the engine will NOT devalue the car . Example : putting a 426 Hemi in it makes it worth less ? Hogwash ! A 273 leaves a lot on the table but if you want to leave it , good for you . If you want to go with a late 318 or 360 , good for you . Economics is a horse of another color . An "LA" 318/360 dressed like a 273/2bbl. is cool . A Magnum 318/360 is cool . Much more economical . For cruising "torque" is your friend and the 273 doesn't have much . IMO Later, TOM