need some info quick
 

I currently have a 2004 Chevy Silverado 1500 Ext cab z71 4x4 top of the line leather heated seats power auto tranny. it has 170000 miles on it. 3" lift 285 tires. looks nice..

I have found a 1996 ford 1 ton crew cab with the 7.3 the interior needs a little tlc but is not bad. the body is flawless.. it has the 7.3 diesel in it and has 270000 miles on it. 4" lift 35" tires 6 gun programmer and some other engine mods.

1.) should I trade? KBB says equal value NADA says mine is worth more. but I like the ford way more.

2.) will the auto tranny in the truck be good? the guys says the previous owner replaced it or rebuilt it but I have no hard info on what is in it or when it was done or if it even was done.

I've been around trucks my whole life and I can look at the stuff like leaks spots of typical rust. but how can I do a compression test or see if the tranny is slipping easily?

3.)how can I test the tranny for potential signs of ware or if it has been replaced?

come on guys there has been enough of you to look at this post... what truck would you pic?

I would perfer the ford if it was me. Espically if it ran strong.