[patrickt]

If you: Change the Cap & Rotor, Points & Condensor (if they still got 'em) Plug Wires, Spark Plugs, and blow the carburetor out with cleaner and compressed air you will cure 98% of old engine ills and you won't have made any real changes to the engine at all. At a car show last year I pulled in next to a young Asian kid that had a highly modified Japanese car. He had clearly spent some significant money on it and it was kind of cool to have his new-fangled engine right next to mine. After I complimented him on what appeared to be a pretty complicated Turbo charger set up he took a gander inside my Turkey Pan, pointed, and said "that's a carburetor, right? Cool."