I am looking for a new Intake manifold for my 1990 Ford Mustang GT 5.0L w/ AOD. I have seen the new BBK SSI Intake Manifolds in 5.0L magazines, run for about $570 and saying they are worth a 30HP gain. This is about $200 more than what I can get the Cobra intake for. Is it worth it, or will the cobra intake do just as well? I'm planning of sticking with the original 302 block, with GT-40Y Aluminum Heads.