‘75 suburban help

[Kmanrsss]

I am looking at a 75 suburban with a 400sbc and the np203 transfer case. Any reason to steer clear? I seem to remember the 400 being prone to cracking blocks and I dont know too much about the 203 transfer case. Planning on a family cruiser. Not planning on any real off roading. Small lift and 35’s are probably in its future. I think my concern is the 203 transfer case as I am not familiar with it. The body is in great shape and I am not a body guy so that seems more important then a mechanical part that I can swap out if need be.