from personal experince:
a. ke is cheaper to run (in stock form)
b. cheaper on insurance (in stock form)
c. spend the same amount of money that you would on a 180 and you'll have a faster ke (safer? nup)
d. 4 door (ever tried fitting 4 people in a ke70?)
e. cheaper parts (in stock form)
f. easier to work on by a long shot! (in stock form)
not to mention all the other hidden stuff you gotta do too.
engineers, weaker ke70 body (compared to the s13)
i already spent quite abit of money on my ae71, altho if i did take shortcuts and did some dodgys it would have been alot more cheaper.. now that i think of it i would have reather done a s13... or with todays prices a wrx