I'm about to do a tranny rebuild on my b18a because my 3rd gear won't properly engage over 5k. Yes, I'm sure its the synchros. Now, when I take it to wherever I choose to take it what can I ask them to put in there? Is there anything that's better than OEM parts? Also, what kind of fluid would you have them put in? I was thinking somewhere along the lines of Honda tranny fluid or some Redline. TIA.