Not sure about the 1.8L but when I had to do this in my '85 1.8 years ago I
went with the recommended Sachs Clutch kit. I would guess it's available at
any of the usual vendors we discuss here.

Also, we were able to do this by dropping just the trans (you of course have
to support the engine)

Good luck.

--
Thanks,

Jeff
'85 GL (Gertie)
'90 Carat (Grover - the noble parts donor)
'86 (We call this one Scrap)
'78 Bus (Melissa) Patty's Bus