Looking for a little more power out of a 318

Was looking at these for some quick upgrades, what do you think? I have either a 600 or 650cfm carb, with that big cam.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=HOK%2D5901HKR&N=700+4294925073+4294908110+4294908090+4294923429+4294839039+400390+4294840085+4294895343+115&autoview=sku


http://store.summitracing.com/partdetail.asp?part=EDL%2D2176&autoview=sku