I'm using the Apexi Z32 AFM (with Z32 AFM) Kit for S15, that was why I took the DIY route to get my own heatshield instead of buying one off the shelve for S15's AFM.I'd be temped to get one of those Topstage boxes to go with my ducting. Unfortunately, like most of them, they are designed with the original air intake and AFM in mind. Impossible to fit with a Z32 AFM and custom intake pipe. - Nicely
Since I DIY the installation of my PFC, boost control kit, Z32 AFM + airfilter kit, HKS Fan controller + 2 speed S14 electric fan (export model) + manual fan switch......the heatshield fabrication was no big deal.