okay so comparing afr and trickflow does the price depict the difference in gains from what youve seen? is there room to grow for both of those sets in the future if i end up porting them way down the road when other mods have been completed and money allows. or would it be mandatory that i get them machined before i even put them on to notice significant gains compared to stock? as for the MAF swap im definitely going to check out my car and see if it has that already done or else im going to hopefully invest in that as well. After the heads would be added in your opinion what would be next? throttle body, intake, cam? im still learning so any help is awesome