Fellas... I'm not a tranny guy, and don't know how to go about this... But I truly would love to know if anyone has an idea on how I could replace my 5th and 6th (or just 6th) with a taller tranny gear on my '06 TE 510. (if it's available, robbing from an older TE, or WR... or ??) I'm geared tall 15/48 (stock is 13/50) however I still stab for the upper gear (7th) and it's not there. 1st is still tall, however not too bad for slow crawling. I'd like to retain where my 1st is now (if not a bit lower) and gain some in the uppers.... ANYONE have an idea where to start?? Who to contact?? Help a TT brutha out.