I have the second that the 2 valve 5.4 was a much better motor than the 3 valve, minus that whole blowing spark plugs out the heads thing a little trick though to the stuck spark plugs in the 3 valve, and yall will all think I'm nuts, take them OUT with an impact. It'll rattle them right out of there. Obviously don't put them in with one. On the gear ratio thing I run 410s front and rear in my pickup and enjoy them thoroughly. Although my highway speed rims are higher I can tend to manage with the use of my chip. The right gears when towing can make all the difference in the world on how much the truck struggles to get up to speed.