Aeromotive GM LT-1 Regulator 13107 - Originally developed with the GM LT-1 engine specs in mind, these regulators were designed to keep these cars performing at their peak potential. These rail mount EFI regulators fit a variety of factory GM vehicles. See a list of applications below: Adjustable from 30-70 PSI, Fuel pressure rises on a 1:1 ratio when referencing boost, 1/8 NPT gauge port, Stainless steel spring, custom-designed for precise fuel control, A true billet regulator, CAD designed and CNC-machined and Return adapter may be replaced with P/N 15606 for a -06 return line. (sold separately). P/N 13106 for 92 - 96 Corvette and GM Ram-Jet 350 EFI Crate Engine. P/N 13107 for 94 - 96 Impala, 94 - 97 F Body Camaro/Firebird and GM 3.1L & 3.4L V6 engines.