Ok I just wanted to clarify ..There are two types of intermediate axles ..one has a housing that is bolted to the trans with the axle inside and has a seal at the end of it where the CV axle plugs into and is lubricated from the trans oil, the other type just plugs in to the trans like the fiero axle does but has a mount on the block where a sealed bearing is housed and the cv shaft plugs into the end of it
If your intermediate  shaft is the type that has a housing that is bolted to the tranny diff housing then there shouldn't be a seal @ the passenger side diff axle housing ..you just get a fiero axle seal and put it in place ..if your shaft is the type that just plugs in without a housing then you just pry out the old seal and put a new one in
When putting a new seal in get a pvc pipe from lowes that is the right diameter as the axle seal and evenly tap around the pipe as you install the seal untll it bottoms out
[This message has been edited by Erik (edited 10-31-2008).]