ok, i have not purchased a car yet so i was wondering before i do; which would be the most cost effective car to buy (4.6 or 5.0) based on my goal of very close to 300rwhp. i have looked around and have found people saying that the 5.0 is cheaper to mod but i was wondering to what extent of mods were they talking about? like is it cheaper if you have very high horsepower goals or is it cheaper all around? i just want to make sure i make a smart decision when buying a car base on future plans for it. thanks in advance everyone