It's good, but expensive from Ford. (BTW
www.fordpartsnetwork.com offers good discounts on gen ford stuff). Good alternative would be the Trick Flow 3561 manifold for efi. You'll need a different alternator bracket (see
www.oemfordparts.com for part #). YOu'll need a 351 flywheel or flex plate (different balancing). check
www.ronmorrisperformance.com, that oemfordparts place,
www.windsor-fox.com or painless wiring for retrofit stand alone efi wiring harnesses if you don't want to mess with fitting a stock harness. Probably also swap headers for the 351 swap, like Hooker, Hedman, or Ford.