just was looking on cusco's site and came across these

http://www.cusco.co.jp/en/parts_product/more_applications_close_ratio_.html

3 different gear sets and 2 r&p
one close to the discontinued by trd too

Very cool but also really expensive. The gear sets are $2100+ and the ring and pinions are $1600+.

too bad there's no 4.77..