Should be able to download a PDF manual from AEM, Fujita, Injen, etc. For the V6 I'd look for a used AEM V2. Otherwise they're basically all the same.
Hmm, if you've never done it before maybe a 2/2.5. Its not hard, the only thing you need to watch for really is getting the breather tubes right. But the instructions tell you what to do. Its a good project to get you started with working on your car.
Should be able to download a PDF manual from AEM, Fujita, Injen, etc. For the V6 I'd look for a used AEM V2. Otherwise they're basically all the same.