I've been on modular depot researching about swapping PI intake and POSSIBLY considering doing a full PI swap (head/cam/intake). But for right now i think just the PI intake is more my speed in terms of installation. However, i have come across this Livernois/Detriot Speedworks intake manifold installation "kit." However the price tag on it is $499. My question is what is the advantage of using this kit as opposed to me just getting the PI intake, PI alternator bracket, RTV the gaskets (still unsure which is better PI or NPI gaskets)? I can see that in the description is says something about the manifold being shortened to fit under a stock mustang hood, but what other advantages will this intake kit have? Thanks alot for any help. Here is the link to the product.