I did the swap on my car and after driving it for several weels I noticed that my third gear grinds when I shift over 2000 rpms. So I'm thinking of buying a new tranny.I found one on ebay 1,600-1,700 bucks, but It looks like its a usdm.Is there a difference in performance between the jdm and usdm? Is it still a good deal? Or should I rebuild the one I have, and if so where can I get it done.