I have an 85 GSL and i think the rear apex seals are gone. The body, interior, engine bay and everything is in amazing condition im not to sure if i should fix it my self or if i should sell it as is? How much time would it take to either install a new engine, or to rebuild mine?

 

you can install a new engine in a weekend. it does not take that much time. rebuilding it may be a little more difficult though, if you donot know what you are doing.

chances are that the only way you will be able to sell it without a runing engine is if someone wants it for a project car, inwhich you will not be able to get much for it.. so if you have the funds to fix it, i would say do so.. hell, you may decide that you still want it afterwards...

besides, if you are going to rebuild, you might as well port at the same time too.