aha.....the elusive Turbo manual transmission parts....there have been tons here that have tried to obtain those parts but not with much luck.
I myself picked up an 87 turbo last year with the same issues.
After some searching I did find the following place. But only got with them via Email to see IF they had the parts.
http://www.txchange.com/main.htm 1-800-776-1191 (503-284-0768)
I was in contact with a "Greg" at the time. I specifically asked about the 1st gear and all synchros for a 87-88 Sprint Turbo manual trans, he claimed that they had the parts. I never followed through as at the time I was not sure where i was going with the car yet.
MY plan was to take pictures of the damaged parts or actually mail them to him. I say that as there have been others that have claimed had the parts but when they arrived to the buyer, the parts were different. The guy I bought mine from, was such a case. Luckily for him the tranny place gave him his $ back on improper parts.
If you persue this, PLEASE update this thread with your results. If this source pans out, I will be placing an order right after you confirm the parts are in fact proper.
Thanks, MIke