Ok, i bought a hatchback from a guy, and it has a b16 in it with a "J1" transmission on it. I don't know much about transmissions, so im trying to figure out what this transmission is from, and where i can find a rebuild kit for it. He gave me a YS1 tranny with the car, so is anything interchangable? someone give me some info on this damn thing . . . . .please...