Air shocks weren't designed for prolonged use on, say for example, an all day outing. If you go slow and easy, they work pretty well, but if you want to get anywhere at a medium or faster speed, they get hot and they loose their "squish" and don't flex very well. Coilovers have damping fluid that absorbs a ton more heat, and can be used all day long for crawling and jamin on trails. Remote reservoir coilovers are designed for all out mobbing! The extra fluid keeps them even cooler during prolonged heavy use.
I did a bit of research on this and was bummed to find out people who bought air shocks for anything other than short run competition crawling were disappointed with them and always wished they had bought coilovers.
I'm looking for a Scout II Dana 300. Drop me a line if you have any leads. Thanks