hate being home this weekend..
isn't the 5th problem some what to do with oiling? at low speeds the oil isn't getting splashed around over to the 5th gear enough. so stay out of 5th at low speeds?
The 02A is definitely a better transmission. Looks like you will have a bit of fun getting one in to a Mk1 chassis though. The 02A is hydraulic clutch and cable shift, the 020 is cable clutch and linkage shift. I don't know if the 02A has provisions for a Mk1-compatible mount bracket either. I am absolutely sure that there are other Mk1-chassis vehicles out there with 02As though.
...BTW your Bieber avatar is awesome.-Malone
I think the clutch is easy as it is hydro and just like routing brake line. The shift tower I would get an O2J style. I have seen a guy put the normal 02J style in with the stock MK2 bolts and just used fender washers to secure it with the stock bolt locations.