[Salvatore]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: luzl78</div><div class="ubbcode-body">I would keep the lower rear gears.maybe you'd gain a improvement of a mile per gallon but the lower rear would keep the seat in the pants exeleration.</div></div>

I would keep the M20 and the 4.10's. Will perform better.
Also, some oil on the plug threads is really no danger right now in my opinion.