I am trying to find a 6 cylinder Jeep Wrangler (either a YJ or a TJ) and I want to be able to put a 3" suspension on it to accomodate 33X12.50R15 with 15X10MT Classic II wheels. In order to be able to turn these tires, plus pull my 18' jon boat, I've been told I will need bigger gears. The question is, will 4:10 gears be enough to do what I'm asking, or will I need to go one size up from that? I don't think 3:73 will cut it in the foothills of NC. I don't have alot of knowledge when it comes to mechanical things like this, so any input would be appreciated.