I drive a '91 Talon that now has 311k on it

I replaced the original turbo @ 280k after running 14psi (stock is 11) since I bought it back in '97 w/107k. There is nothing wrong with the reliability that you wouldn't expect on any 13 year old car.
I plan to rally a '91 Talon (god, when will I get the $$$ saved to do it!?!).
As Darryl said, parts are plentiful. I picked up an entire rear end for $150 because I wanted the LSD. Now I have struts, rotors, calipers, etc. to sell off!
I've started doing Solo2 with it this year and it handles quite well on tarmac. I've done the winter rallies with it and it's always been a hoot to drive. It's a car that you get attached to also, I don't think I'll ever get rid of it!
If I wasn't soo Talon biased, the choice would be between a Talon and the 2.5. I could never go back to 2wd again either.
I wouldn't go with a 323 just because parts will be harder to come by and cost more.
Good luck!