It's going to be tough to make a 22re get up a big hill without the turbo or supercharger... It's get way crazy expensive at that point. I had the same issue with shifting between 3rd and 4th anytime I was going into the mountains not matter how much I built up. Just run the 22re as it is the when it blows up get a 3rz or a 3.4 if the gas mileage isn't a concern.
I wish I had gone the 3rz from the beginning and didn't stroker, cam and header out my 22re. So much money I dumped.. oh well it's going into my 2wd truck, once I get the 3rz dialed on the 4x4
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