Coil-over-plug (COP) is what you want to spend your $ on now. Leave the front coils in place for ballast, to keep the front wheel down! Plus, they are a pain to remove. Any auto parts store can sell you lengths of plug high-tension wire to replace your existing wire, if you cannot afford the COP's now. Many people remove the wire from the high-tension coil tower, and upon examination, find it's green w/corrosion. Trimming about 1/2" off usually results in getting to a good conductor again, and there is enough slack available, that losing that much in length will still make the high-tension run from the coil tower to the cyl head/sparkplug.