quick view Add to Cart Aeromotive Aeromotive X-1 Series Internal Conversion Kit - .188in Seat 35-75psi - 13013 MSRP: $179.99 X1 Series Internal Conversion Kit, .188 Seat (red in color), 35-75 psi. From carbureted to EFI pressures, naturally aspirated or forced induction, the X1 is designed to span the entire range of applications providing dependable fuel pressure regulation... Add to Cart Add to Wish List Add to My Wish List Create New Wish List Compare