I do not remember what motor is in front of the transmission but it proberly the 300 6 or v8 both are good motore for adding tire size. The transmission is every wheeler dream. I wish I could find one for my jeep. You could run 33 or 35 with minor differents in speed . if it too noticeable up the axle gears but keep the trans. The granny is the ulitmate. Nearly all trans except for the overdrives are going to have a 1:1 final. So just consider the t18 as a three speed and forget about granny till you need it.
brownbagg </font color=red>
brownbagg </font color=red>
