Looking at one with 104k on the clock and am worried about one detail, car seems to lack power and has oil in the exhaust. Anyone have seen or heard about what is causing this issue, Unless not not taken care of, I think rings would not be the issue, but worn valve guides. Anyone ever had their heads rebuilt?

TIA

 

HARD PASS.
Find another one, there are dozens out there in better shape and probably cheaper.
Don't buy a project, they are too expensive and difficult to complete.

 

+1

Unless you are deliberately looking for the mechanical challenge to fix this and the selling price is VERY low to compensate for big spend on even just a top end overhaul.

Graham