As mentioned, I would ask him what his price is first. This way you won't worry about insulting him and see what he is thinking. The trade idea is pretty good too as used car prices should be falling, Though I would not want to get stuck with another car if he changes his mind.

8k would be very cheap, even rust buckets are trying to get that. I like the 71 grille better than the 70 too. Still 70 taillights?

Let us know if you get it and post some pics.