Few Crewcab Q's

[LS1powered67]

I have been toying with the idea of taking a burb and big window cab and making a 4x4 crew cab with 6 foot bed to drive daily. I have been slowly gathering parts etc and one of the questions I have for anyone who has attempted this is what frame did you end up using. The burban frame seems to be a little short as well as the rear axle being to far forward. I am a ways off from starting this project I am just in the information/ parts gathering phase. thank steve.