Ok so Im new to the focus world but very experienced with cars. Im starting with a 2002 lx I got for free with a song spit under the hood. I'm coming from an h22 swapped 93 accord coupe sk I need some horsepower here. Ive been looking on car-part.com for an engine. There are two options it asks about whether I am looking for an engine with a smooth seam intake runner or a raised seam intake runner. Any ideas?

the smooth seam intake manifold is a 2000 model zetec. after that the intake manifold is a 2 piece and has a seam. the 2000 intake is better for performance and boost application