Its a 351w out of a 1995 Ford Lightning .040 je flat top pistons Z-303 motorsport cam Streetmaster intake holley 650 double pumper motor has about 150 miles on it but now I am changing some stuff so my loss is your gain I went 12.43 @ 117 in an 87 GT this motor sounds awesome the pistons alone are almost 700.00 Let me know soon