I'm prepping a w50 for install (first on my 18rc before i mate to my rg when its finished). I've been pouring over the manuals on RetroJDM but I can't get a clear idea on how you replace the input and output shaft seal.

1.) for the input shaft seal, I can't tell how to remove or replace it, it looks as if you need to remove the bell housing, but im not sure?
2.) if I do have to pull the bell housing, I'm guessing theres a gasket there that will need replaced, but It looks like its discontinued, that mean I need to make one?
3.) output shaft seal removal is a little clearer, but it looks like there is an SST involved, and i definately don't have that

any ideas?