http://www.brite-lite.com/CdnShop/Publish/cat105.htm
55W $15.95 6400K
And if someone got the Workhorse ballast there for $55, you'll just need end caps and bulb clips. Then you'll need to get handy and make a canopy, with some reflective aluminum flashing (can be had for cheap from Rona, or my garage...)
Canadian Man made an awesome hood for my nano awhile back, and would also have some good ideas. Wish I kept a picture of that.