Im not completely sure exactly what you will need for an auto to manual conversion, but you will need a few more parts besides just the tranny. Besides the manual tranny, I think you need a manual Intake Manifold, shift linkage, I think a different distributor, and I few more things here and there. Basically, its a lot of hard work and money for a minor performance increase. You will probably come out better just swapping the whole engine out for a manual one. Personally, I would just keep the auto and save up for a nice swap (B18 ftw!!). You will be much happier in the long run.