New Mexican hookups?

ok im picking up this 74 duster Friday http://amarillo.craigslist.org/cto/2957152481.html
Fresh 383 with 10-1 compression. Four speed pistol grip trans. 390 posi rear end. New Cragers, front 14x6 rear 15x10.


any one know how well that 390 will do on the highway 8 3/4 with 391 gears