On Alfa number 15
AO Platinum Member
Join Date: Dec 2005
Location: United Kingdom
Driveshaft seals can be done by removing the drive shaft - pretty easy.
Input shaft will require the gearbox to come off.
You need to smell the oil to see if it is gear oil first, it might be engine oil, and may be leaking from where the sump joins the engine. Thats quite an easy fix too.
I think you would be better keeping the car, rather than roll the dice on an unknown one that may also have a load of other problems.