To answer your question, your resistance reading for OEM carbon core wires sound correct. They are usually in that range.
However,ignition wire resistance so large as that weakens the spark. Thats why I use only MSD superconductor wires on all my Fieros.
Stock GM carbon core wires can run 8,000 to 10,000 ohms per wire. Thats a considerable impediment to a strong spark. Standard nickel spiral performance wires can have about 300 ohms per ft of resistance, while stock GM and other carbon core wires can have several thousand ohms of resistance per ft.
MSD Superconductor wire has the lowest resistence of any wire of only 50 ohms per ft. and hence it provides the strongest spark. It also improves the life of your coil(s) as they don't have to work as hard to overcome much resistance to fire the plug.
87GT - 3800SC Series III engine, 3.4" Pulley Flotech Exhaust Autolite 104's 4T65eHD
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "