Hey Kris, still wanting to see the new beast! Congrats!
Tom is right on the rear end code... let us know what you find on that.
I"ll send a message out to the local group from the club and see if we can find you a 400 hood, or at least a 350 hood for now... to get rid of the hole! We can raid some of the club member's parts stash!
There is a place that I've used in Auburn, Blood Enterprises, they are top notch and will do a straight Dyno run or a Dyno tune. BUT, they are also top Dollar! There is another place in Tacoma that I have some info on, but it's at work, I'll get it in the morning and send you a list.