I LOVE the M2A4 tranny. It's the gearing I've always wanted, short of adding a 6th. I could have paid an extra $400 for the M2B4, but I'm just not into spending money on car performance enough to buy an LSD. The motorcycle cured me of that.
Anyway, swap went great, I've been driving it ever since. A couple of little problems though. The engine has some serious hesitation right in the middle of the rpm range, especially prominent in 1st and 2nd gears. I'm planning to run a Sea Foam treatment and see if that clears it up. Also, I sprung a coolant leak somewhere the other day, so I'm filling up the radiator with distilled water before every trip. But that just requires some servicing.