read my original post. I explained the difference b/t the F20B and the H22A4...

I also have listed a COMPLETE tranny code list and gear ratio list for every H-series and most worth while F series tranny out there. READ THE SHIT BEFORE YOU TYPE.

I have had a JDM TYPE S swap, a JDM SiR S-Spec swap, A Euro R longblock with the SiR S-Spec tranny, a SiR S-Spec engine with the oem USDM tranny, a JDM H22A (OBD II) with a USDM tranny, and a H22A4 with a JDM LSD tranny.