| I've developed several products or modifications for the Z32 in the last six years. I have a patent on mod's to the upper arm mount, which permits you to have adjustable camber using the stock upper arm. There's a lot of effort involved in getting the design 'right', then doing the grunt work to produce samples and fit them. You also have to have some production facilities, or a form of contract with people to produce the parts when you need them. Unless, of course, you have the equipment and the time to do it yourself. And DIY is the only way you'll be able to charge a reasonable amount for the parts, whether you charge a profit or not. Demand is the other thing. Changing spark plugs is not a frequent thing to do, so if your goal is to make that exercise easier, you've picked one that most owners will do maybe once or twice during their ownership interval. I have a hard time seeing enough demand to produce enough parts to make it worthwhile for you or for your 'customer'. Take my brackets as an example. I've sold ten sets in the past three years. 300 Degree's kit is cheaper and accomplishes the same goal as mine. My advantage is that you can have more positive camber adjustment. I can't sell mine for what 300 Degree sells theirs for because I can't make them cheaper than $200 per set. Just my $.03 Tom Bell
IZCC 2802
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