Re: New guy in Illinois.
Welcome to the forum. And as was said, you posted in the right place for your introduction.
I'll also take this opportunity to pass on a warning. Your original speed goals aren't impossible, just not advisable unless and until you have addressed the important areas first. Remember that it's a bicycle, with bicycle rims, tires, spokes, bearings and especially brakes. None of them meant or designed for continuous speeds in the 40s.
Dropping big displacement engines in a bike frame is only half the job. The other half is seeing to it that the rest of the bike is up to the task you're asking of it.
Reconsider your speed needs, at least until you have built your first bike and have a feel for what's safe.
Good luck and have fun but be careful.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"