Fast 102 on an LQ4
You can see where I started grinding above that bolt. I ended up having to take off some to the left as well. Nobody can give you a measurement, you'll just need to put it on and test fit everything and take it off to grind. Do it in several stages instead of trying to get it perfect in 1 or 2 tries. Many people grind too much and have to buy a new pump because it breaks through to the inside.
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Page 7 of my build thread guys are talking about it. You might ask them specifically if you have questions/doubts.
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