yeah theres been a few LS1 type conversions going on your looking at a realistic figure of 10k for a proper conversion aparently so its a good option if you need a rebuild, would be proper reliable and more power potential (other than supercharging there isn't much potential in the speed 6)

the only problem i would see would be resale issues and insurance, insurers don't look favourably on engine transplants as i found out with the 4i