Re: doing engine work will i need a tune? right away
Stock tune will suffice although you should look into getting a datalogger and SCT so you can get a custom tune.
Best thing to do would be HO cams or one of the regrinds, port the heads, and whatever can be done with the manifolds. IIRC there is some meat to them. 08 manifold is a nice piece but you'll need a tune for all that. My 4.7 with manifold back exhaust, 08 manifold, intake and stock cams was fine on stock tune, but anything else and it would have been lean up top.
Due to my workload, please do not PM me as I do not regularly check my PMs. Thank you :)