$100.00 and 1-1/2 hours vs. $450.00 Would have suggested you do your own wires & plugs, but today, that "skill" is pretty much unknown or forgotten.
![](http://contentinfo.autozone.com/znetcs/product-info/en/US/grn/25341/image/2/)
Would have suggested you do your own wires & plugs, but today, that "skill" is pretty much unknown or forgotten.The $100.00 and 1-1/2 hours IS my time and cost.
And BTW feeler gauges are no longer used - platinum plugs come pre-gapped and many are not adjustable.
![](http://www.ultimategarage.com/shop/images/3199NGK.jpg)