Dude I have never been a fan of those Boulder type wheels. I know Boyd Coddington makes one and so does Billet Specialties...but that wagon looks real nice man. I'd leave it the way it is. If you like the Boyd Coddington ones I may be able to speak to Chris Coddington and get some money knocked off the price.
Smoothie from Intro wheels
Flat top from Boyd Coddington
I have always loved those caprice's and wagons. What kind are those wheels anyway? They have a good look-you have 22's for your truck yet? Just I saw the bed chopping/tubbing going on.