This is the worst heap of rubbish I have ever seen, first of all it's dirty, the powder coating on it is rubbish, full of chips and dents. And the bolt hole for the boost tank connector is the worst drilling, tapping and tapping I've ever seen! Also, the threaded hole is so full of burrs that I cut my finger on it. Complete garbage. I would give this product and the seller a negative star rating if I could. So 1 star only because the seal looks ok. But honestly this product is a joke and I'm very upset that someone sent such a bad product. Seriously my 5 year old could do with a better product.