A 8 stack EFI na system for gm LS engines cathedral port, 1 hour run time . Computer,coils,fuel rail,injectors,air filters, ect,ect. These can make more power than fast 102 intake. Nice setup, only reason for sale is customer wants more power so we went to a whipple its the only reason for selling way below cost. Was $6000 new . Selling this for $4000.