Yet AGAIN more W2 360 talk

Just sold my 1986 D-150 with 408 stroker w 727 Auto and 8ft bed ... 470HP and 535TQ ... and it did weigh 3650Lbs with roll pans in lieu of heavy bumpers and with factory A/C PW PL etc. That torque crazy motor pulled that truck like it was 3200 Lbs with a 3.55 gear. Question being with all of your torque would you need anywhere near that much gear? I'd maybe try a 3.91 or 3.55??? Sort of like going with too much convertor for a torquey engine ... doesn't require as much.