I just bought a 89 SLX Sierra. I do not know hardly anything at all about GMC trucks or any truck for that matter. First question, can I replace the dast with a newer style dash say like a 96 type dash? What does it take to do this? Is the wiring basically the same? I just dont like the old style guages and stuff. Also, is there an inexpensive way to change this truck over to 4-wheel drive? Last one, does anyone know of any good forums that are in my area? Oh, hey, what about some good sites with some parts!?!