Ok, I have been on a hunt for a 700r4 for my 88 GMC 1500 4x4. Found two transmissions but need to choose. One is a 2wd with a shift kit that I would have to switch over to 4x4 for $300, the other is a stock 4x4 for $300. Both transmissions are from salvage yards in my area. Both I can pick up today. Which one should I get?