hi, I'm looking at a 2004 accord LX I4 5AT with 100K miles.

I've done as much reading as I can find, but here are my remaining questions.

1. I've read about the failing transmissions, and with 100K miles and assuming it has the jet kit added (I still have to call a honda dealership and run the VIN), is it safe to say this transmission will be solid?

2. the radios are another problem area, but once again (also need to run the VIN on this one), but at 100K miles, is it safe to say this is no longer an issue?

3. have any warranties been extended beyond 6 years/100K?

4. are there any common problems/things to look for?