My car is 2000S with 46k now; I got it at 38k. My shifting characteristics sucked and I bought a b&m ssk. Made a world of difference. About 3 weeks ago I changed the MM to a Wevo unit. That was a big change! Much more responsive, as my stock unit was pretty trashed and I could feel it bouncing around. The wevo is not for everyone, but stock units fail at 40k easy.
Still having a cold shifting problem mainly with 2nd, most likely the synchro, luckily my warranty will cover that when the time is right.
Kyle