fix the tranny mount.... that's not a big deal. Are you certain nothing damaged the tranny case or motor oil pan?
The CV is a pain in the ass.... You can use a split boot if you are very careful, very clean, and do exactly what the instructions say... even then it can be iffy.
Using a standard boot would be best. The inner boot is easier to fix than an outer.
And they use a special grease that is made specifically for them.... you can get that at most parts stores.
You'll also have to buy or borrow the tool for the boot clamps. They have to be done with the correct tools or they will not stay on. Some of those tools also require a breaker bar and a torque wrench. (I don't remember what clamp tool is used for Fiero right now.
The real question is.... did anything hit the axle shaft? is there even a smalle chance something hit the shaft? If you can't say for certain then replace the entire half shaft. Even a small bend in the shaft will likely cause really annoying vibration.
half shafts usually arent' that expecive... I just replace the damn things when they blow a boot or what ever. I think the last one I did was about $50 at Pep Boys and had a year warantee.
One note.... the replacement shafts don't always come with the ring around the outter CV... be carfull moving that from the old axle to the new one. And yes, you need it or the seal that runs on it won't seal. that seal provides additional protection for hte back of the hub bearing.
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11-Sept-01, The day the world as we knew it ended.