Dave Fritz's web site shows 2001 5-speeds to have the HY35 and the HO's to have the HX35. I just looked at mine (2001 5-speed) and it has the HX35. The plate says so too. Is it just chance that I got a HX35? I am putting in 275 injectors and an Edge EZ. The HX35 is a better turbo if you are adding power isn't it?