If you get new valve guides installed at the same time it'll be a re-built top end. I'd seriously look into a re-built engine since like blazes9395 said your bottom end is probably warn out as well.
There are 1 or 2 members that might have good used motors for you
Try sendng DMBrisket a Private Message and see if he still has his.
heres his personal profile
http://www.automotiveforums.com/vbul...oster&t=570124
Tell him Overboard sent you.
I only have a 2.8L available, which won't fit.