67 Satellite overdrive transmission

Hi Guys, I have a 67 Satellite ,383 bored .30 over , light comp cam, competition carter 650, stock heads, 727 transmission, 323 gears posi. The car preforms well for the size and weight but i was thinking of maybe moving up to 410 gears. I use the car mainly for cruise nights or City driving but would like the option of longer highway cruises, i was wondering if anyone knows of a later transmission with overdrive that would bolt on without alot of custom work, also i would like to redo shocks, what do you suggest to use? thanks pete
Author: sendust