RSMracing.com carries intake manifold and throttle bodys, I was wondering if $189.99 + $250.00 Refundable Core charge is good for a 59mm throttle body, and if $149.99 + $150.00 Refundable Core Charge is good for a ported intake manifold. What is a core charge? Is that where they supply the throttle body/intake manifold? That way you don't have to send yours in? What kind of power do you think these might give? With a intake(AEM) and cat-back(flowmaster).