Bob what is your location?
I have an 91 engine for sale myself, it has new seals, 7 out of 8 injectors less than 2 weeks old(!), guides put in (!), guaranteed (or money back) non sludge or varnish engine
Will give supercheap to those who are willing to come here and pull and pick up themself.
Be VERY careful when buying used engiens and be sure to run the deal by us.
Fred...
PS: I am not really hard up to sell the engine just figured I'd let u know, its not even in our Buy/Sell/Trade section yet, also be sure to check there as well sometime