K30 crew cab frame dimensions/pics?

[Devilman]

I'm converting my 78 c30 crew to 4wd and wednesday I'm going to pick an 86 k30 crew cab frame and need all the info y'all got on the frame specs. Pics would be nice also.
Reason I ask is so I can verify it's an actual K30 crew frame. It's a bare frame with no axles and looks to be the real deal but don't wanna end up with a converted c30 frame like I've already got. The seller sent me pics of it but idk how to post them on here, used photobucket before but I haven't since their fiasco.

Thanks!