I've tried several types over the years and have yet to find one that works good. I'd always end up selling them and going back stock. If your manual regulators are in good shape, there is kit you can get on
Ebay for less than $100, but its not a clean install. They use adapters that mount to your existing regulators. I also tried
these but never could get them adjusted quite right. The best kit I've seen IMO is the
Nu-Relics unit. They're a direct bolt in but they're not cheap!
