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You can thank Matt for this little sign on Blow-By Racing’s CNC’d heads. The first go-round with these heads, Matt forgot one little threaded plug on the heads, which sent about 4 quarts of fresh oil on the shop floor. He quickly realized the mistake, and this time he didn’t really need this sign, but it was a funny reminder nonetheless. Also, the first installation we did with Matt on Blow-By’s heads, they were bare, but for this install the heads came with valves and springs installed. Doing so cut down the time it took to accomplish the install.