Ok the 83 has already been changed to a dual. ($3000)

The 84 should already be a dual correct?($3100 but very negotiable so i'm thinking ballpark 22 or 25) but I haven't seen it.

So my next check on both should be the frame? ... oh forgot the owner of the 84 did state that it was some rust in the spare area.(should I stay clear of this one and not even bother?)