Hey guys..new to the forum. I just picked up a 06 2500HD Duramax crew cab/long bed . I'm wanting to put some 35's on it and I was wondering what all I needed to get em' on. The truck is only 2wheel drive so do I just need a leveling kit or am I going to have to lift it? If so what's the size lift will I need..4"? Well if anyone can give some input I'd really appreciate it. Thanks.