I got a '91 150 with a 318 and a3 speed automatic. Im about to start commuting 2 hours (on the highway) every day and am worried about running the truck at such high rpms for that long. Whats the best thing to do? Put in a torqueflight or taller gears? How tall should I go? Whats cheapest?? Whats easiest??? Any advice anyone could give me would be awesome. Im gonna end up doing both, just need the quickest fix for the time being. THANKS!