I know you're looking for pre-built, but in the long run, I feel you're better off hiring a webmaster and hosting your own website for many different reasons, but that's not the point of this topic...so I'll make a suggestion...
If it's pre-built you want, Talk to Glenn at
Insurance Squared: Life Insurance Websites. He's great to work with and is a life agent himself. You do need a subscription to Compulife though. I use his term life quoting plugin (
Term Life Insurance Quotes - Insurance Squared: Life Insurance Websites) on all my websites. You can see an example of this plugin on my life insurance blog in my signature. It's got a health analyzer and everything. Best life insurance quoting engine on the market in my opinion.