Sure I can help you out. We can build anyone of our wheel designs with a step lip. We can build the wheels in 2 piece to keep the cost down. The 18" sizes available are 18x8 and 18x9.5. Here's an image of a set of step lip wheels we built recently. These wheels only weighed 19lbs a piece. Let me know if I can help.
Thanks
Zak
www.bozeforged.com