Has anyone used the Trick Flow upper plenum for 4.6s? It advertises "as much as 100 cfm over stock" and a 3/4" raise over stock. Just wondering if anyone has put one on theirs and if so, how is it? They are pretty cheap - about 140 bucks. Wondering if it would be worth getting - I don't have the time for getting all new heads and intake, just wanna do a few more easy bolt ons - just tryin to decide what to do next. Thanks