http://www.hanlonmotorsports.com thats how you can get ahold of them.
i had to replace
1-2 slider
3-4 slider
all synchros
1-2 shift fork
3-4 shift fork
output shaft
shift fork pads
3rd gear
all this damage cause i was too f-ing lazy to buy a short throw, needless to say i beat the shiznit out of my cars.
it ended up costing me over $500 if all yours is doing is grinding a little you probably only need synchros and you might as well change the shift fork pads while your in there. (change all the synchros whether they need it or not)
i think the synchros cost me 70-80$ for the set, and the pads are only around $1.00 a piece i think