You definitely want to find a forum dedicated to off road builds. Some of the things you will come across is that you can do a mild lift by adjusting the front torsion bars and over sized springs but you have to really look at you drive shaft angles when doing this. Also you will be sacrificing stability and comfort with these modifications. I have a feeling you will be going into a lot more depth with 33's. Also another thing a lot of people forget about with oversize tires is that you need to get a speedometer gear to match your tires so your spedo remains accurate.
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1998 EB Expedition 4X4 200,000+, 1999 Windstar 200,000+ (Needs Head Gasket), 2008 Chev Colorado (Company Truck, Really sucks but it's free)
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