The Edelbrock 3835 adapter kit is required to install our Performer 5.0 PN 3821 or Performer RPM PN 7126 in 1994 and 1995 Mustangs. The 1994-1995 throttle body has a different bolt flange and idle air motor than 1987-1993 models. It is also swung out 50 Deg and dropped 1 degree from its previous location. The 3835 locates the throttle body in the stock location and accepts the stock vacuum fitting. Testing on our 1994 Mustang showed a .4 second improvement in 10-70 MPH with our 3821 and 70mm throttle body vs. stock.