Check out SouthDown in the UK. They have their tops and the part that goes onto the fender/wing (just like the mantec ones) for sale, they even have factory 2nd if you are in a real budget pinch and will ship to the US too.

If you go onto the UK side of ebay. "www.ebay.co.uk" you can find their web site. I was going to go this route but have so much going on right now with work there was no way i could dedicate 2 or 3 weekends to design and fabrication, hence the 2 hour install of the Safari. Here is a link to their listing. http://stores.ebay.com/Southdown-4x4-Products

Post some photos if you take this route as I'd like to see one.
Dave