You can get adapters fairly cheap online. Search around a bit. I found some here-->
http://shop.adapterkings.com/4-Lug-t...g-to-5-Lug.htm
Just in case I can't get the FB axle worked out in time. They even can do custom hub centric to the axle and wheel, but it adds alot to the price. If you go that far, you might as well buy the RE-Speed 5 lug axles!!