Join Date: Jun 2001
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Re: H.E.I. for 258.
With the 4.2L engine you have, the TeamRush upgrade is a better choice and will outperform the HEI upgrade.
Do a search on this board for the TR upgrade and you'll get hundreds of posts covering the topic. If you can do a tune-up, you can do this mod - it involves replacing the dist. cap, rotor, wires, and coil to Ford components. You retain the stock Jeep distributor in the process.