although I dont expect 30 MPG, any increase would be awesome, the larger problem is the high RPMs on the freeway, its loud and annoying.
Anyone who is having their tranny cracked open would be wise to opt for the taller 5th gear.
Under TRE's "Genuine Mitsu Parts" page, they list the gear itself for $220, If it is a mitsu part, shouldnt it be available through brookdale mitsu?
http://www.teamrip.com/GENUINE_FACTORY_AWD_PARTS.html
Its about 1/3 way down the page.