If your on a budget, the Bilstein 5100's are a great way to go. I'm still waiting on ORW on eBay to accept my offer (offered $300). You can "buy it now" for $369 with free shipping. That's a good deal in my eyes.
If you want a better ride, you may also want to look into FJ coils. A ton of people on this forum have done the swap and it's motivated me to try it. I already have my coils, purchased them from a user on the FJ forum. Just waiting on my Billies. Ark Swamp Rider has a spreadsheet going with lift numbers from other users. I think I look at it daily! I can't wait to do my swap...