I got the performer air gap. It's a little heavier, I think closer to 22lbs. You might have found the weight of a regular performer. Thanks for finding the stock intake weight.the cast iron intake is 41 lbs, your intake is 16.5 lbs.....
have you bled the cooling system yet?
And no, I haven't bled the cooking system yet. I guess I could just pump my new coolant into a bucket, and then pour it back in once the entire thing is bled?