Had mine running for 6 summers now. Has a 383 out of an old 66 Newport which was my daily driver in the 1990's. Got silly with the wastegate stop screws and pushed a head gasket out of it about a week ago on the last-of the-year cruise.It did ok at 18lbs. but 21 put it over the edge.I really thought it would blow through one of the cast pistons first.Just had bolts and whatever gasket felpro puts in the standard gasket set.Cometics and studs on the 470 going in.I swapped it over to twins last winter in preparation for the 470 and just drove it the way it was for the summer.I have edelbrock heads so I made stainless manifolds to clear the plugs. The straight plugs should clear a factory manifold. From what I've seen/read it's pretty hard to mess up the hot side as long as it is sealed up and doesn't crack.Don't worry about the restriction aspect. Dizuster runs mid 9's through truck manifolds with a 1 7/8" outlet.Ignore the nonbelievers/haters too.Grandma always said"Can't never did anything" Heres version 1.0 http://i355.photobucket.com/albums/r461/FriedDonuts/P1000670.jpg And version 2.0 http://i355.photobucket.com/albums/r461/FriedDonuts/CAM00911_zpsm4keefia.jpg Yes, I hooked up the hose to the driver side air filter eventually.