Possibly Buying a G20 questions

I posted this over at the SR20DE forums, but I thought this might be a better place. I found a 1995 G20t 5spd. Sounds like it is in good shape, but it has 157,000 miles on it. I have some questions:

1) Is it worth it to buy a 157K SR20? I know they last a long time, heck, I've got 130K on mine now! I can fix most small things, but if something major happens, I'm screwed!

2) What, if any, are the differences between the '93 and '95 G20? I couldn't find good info on this in the FAQ. The '91 - '96 are listed together. More importantly, are there differences in the engines? I would guess the '95 has a low port, right? What about speed limiter, redline, etc...?

3) How would a '95 G20 compare to a '93 NX? I know the G20 won't be as quick, but will it be a dog? What about handling?

Thanks in Advance!
Ben
'93 NX2K