How much and where to get a 5th gear gearset?

5th gear is out on my tranny, didn't make any noise, just nailed a hard bump going accross a bridge doing well above the speedlimit and it was like mashing the clutch in. Didn't hear any noises, but where would be the best place to get a gearset if it came to that? Thanks. 1-4 and reverse are all good, just need 5th.

Haven't popped her open. I was just curious in case I did need a gearset. 5th had a couple chipped teeth when assembled but they were 2 fairly small chunks on the big gear. Just had me concerned. My primary guess is the roll pin.