as far as "something that will last" is concerned, once you start modifying the stock vehicle you're aking to wrench on your ride more often. any little thing you change may have unforseen consequenses. stockers run 200k miles with maintanence only. they're designed well by a team of engineers with degrees in mechanical engineering. don't crush the quarterpanel in a rollover and the bottle will be fine. if you do roll it over you've got more problems than the bottle.

94 yj 456gears, detroit locker and 30 spline axles out back, 33" bfgs