TY752VB1AA was built with a 0.825 5th ratio, so I expect that is what you have there. I am not aware of any USDM 5MTs that came with a 0.825 5th gear set...only 0.738 5th gear set. NEW You would have to order a non-USDM part to get 0.825 gears, a US dealer is probably not going to work. Your looking at some place that imports those parts. Also the 5th gear set comes as a pair. Gearing would be different and you would add a ratio jump in there but "maybe" you could install the 0.728 5th as long as the hub/tab/etc specs match up. USED maybe someone is parting out a JDM 5MT and you could get the 5th gear set from it...
*How does the 5th bearings/races look, debris damage?