24 valves tend to be in better exterior condition since they're obviously newer, less rust, etc. If you see a nice 12v, probably be paying a pretty penny for it. On the 24valves, there's a problem with a certain block casting, the 53 block. About 1% crack (seems like more, just search "53 block" here on CF and check it out) and then you'll have to replace the engine. The 47re trans are good until you start adding bigger injectors, turbos, etc and then you'll have to sink anywhere from 3-5k into a newer built one. I'm still on a rebuild with 50k on it, slips a lot but I only have a 65hp box on it and a new trans in next on my list. Prepare to sink $1000 into a new injection pump when it goes out, plus 3-500 for new lift pump. Pretty much when something breaks, it'll average $1000 I've found.
Intense Blue 98.5 ARB Reunel AFE Isspro GDP Quadzilla Warn Carli Thuren Spohn