prior to this, i only was required to have an SFI 3.2A/5 three layer suit. and mine is one season old now, 2012. now it seems i need to have an SFI 3.2A/15 five layer suit~! and i was JUST RECENTLY shopping for a different jacket as i feel mine is too heavy/stuffy. FML.
Are they actually enforcing this at tech is the question. 5 layer suits are pricey, the very cheapest i have found is $880 and the coat will be a stretch to see if it fits. the next was a Sparco "Sport-light" SFI-15 at $1000. for pants and a jacket. and that is cheap they go up to >$2k!!!
9.99 and faster, any vehicle, supercharged or turbocharged running alcohol:
Suit meeting SFI Spec 3.2A/15, gloves and boots meeting SFI Spec 3.3/5 mandatory.
If SFI Spec 3.3 neck collar is required and driver opts to use head and neck restraint system instead, then SFI Spec 3.3 head sock or SFI Spec 3.3 skirted helmet mandatory.