Ok a lot of questions there...
First there wont be a huge gain with a cam(I'd say between 15 and 20 hp) if you don't really have anything else done, like porting, but it will still make the car sound a lot better. And for the tuner, yes you will need one, as well as a custom tune. It shouldn't be terribly hard to install, as long as you have a pretty good idea what you're doing(as with anything lol). You might be able to get it done with someone helping in a day. The comp cam is a billet camshaft, meaning it is new. You also don't need new pushrods for that one if you don't want to. With the delta cam(regrind) you would need longer pushrods and the length checker to get the right ones.
First there wont be a huge gain with a cam(I'd say between 15 and 20 hp) if you don't really have anything else done, like porting, but it will still make the car sound a lot better. And for the tuner, yes you will need one, as well as a custom tune. It shouldn't be terribly hard to install, as long as you have a pretty good idea what you're doing(as with anything lol). You might be able to get it done with someone helping in a day. The comp cam is a billet camshaft, meaning it is new. You also don't need new pushrods for that one if you don't want to. With the delta cam(regrind) you would need longer pushrods and the length checker to get the right ones.