Well I searched and couldn't find any rough estimates so I thought I would just ask. Does anyone have a rough estimate from experience what the stock 4.6l 2v engine will take? I would like to have this serve as an approximate guide to eveyone. Anyone that has any information on this, please feel free to post for everyone's advantage. Stock as in no built up internals or anything. I am trying to find out how far the engine can go with what can be bolted on and such (ie. supercahrgers turbos). Thanks in advance.