to save yourself some money...unless ya have a full full exhaust already or plan on doin that soon cont waste your money on headers...they wont help you.
as he said, a search will yeid the best info on the tranny, but there are no performance trannys just the stock 5sfe manual(search aslo for the MR2 5sfe manual) and a few parts avalible for it.
BTW...:welcome:.