My integra was originally a auto, and we converted to manual. Price wise I cant give u an exact figure, and difficulty would depend on how mechanically youre inclined I guess. It wasnt too much work, just gonna need some parts here n there. I got my tranny w/the engine, and most parts from the junk yard, with a few from the dealer. I can give you a list of parts and the price I have paid for if you want, just PM me.