In an archived post I read it was possible to put a ITR 4.785 FD in the JDM YS1 transmission with maybe a little grinding of the case necessary. I'd also like to put in a 94-01 Integra GSR 5th gear. I assume this will fit. From what I understand the 5th gear is the top gear on the shaft, but I'm not sure which one it is.

Is it #4 in this picture? Is part #4 the only one I need?


http://www.acuraautomotiveparts.org/...RSHAFT+%282%29