Do you have an OMC drive (if it's a 95 engine then it's the joint venture product which is really a Volvo) or a Merc drive?
because if it's a Merc Alpha then low cost aftermarket drives are available from SEI, they come with a good warrantee, I have never used them but they have a good rep over on
http://www.iboats.com...
Other vendor I have used for small parts is
http://www.dougrussell.com I have bought Cobra parts from them but never anything as expensive as a drive. If I needed a new drive I might convert my Cobra to an Alpha with the SEI kit or have my mechanic (excellent) rebuild the Cobra since it's given me great service...
the joint venture drive is a good one and parts are out there because it's Volvo but Volvo drive prices are more expensive (the SX drive is more comparable to a Merc Bravo I than an Alpha)...