Have you got the funds to replace it with a car you
know is much better? If so, go back to the index. If not, read on.
I take it from your comments that the car is reasonably "original" at close on 3 times around the clock. It also looks half-decent in the pics.
I'll play doctor and write a prescription:
•New timing set ($116)
•New cam and lifters ($400)
•Recondition the head ($500)
Add labour costs to these.
Besides that lot, check your distributor function (mech advance especially), radiator/thermostat (yes, you
do need a thermo), do something about the EGR (it's not legal to block it off, but it helps

), maybe clean the inlet manifold by media blasting (duff EGR fills it with thick crud in places), and reco the carby. But it will almost certainly run with the basic list.
Now you know why some of us love our tool kits so much...
Regards, Adam.