oh yeah, as far as the saab story. anything is possible on the street. also, the SHO could have been an automatic SHO with a slipping tranny. my lord those trannies SUCK!
there are also many factors i won't bore you with concerning maitenance. you can have a slow SHO if it is abused and not maintained.
as far as the impalla SS. they aren't all that impressive stock, but they do have a corvette LT1 350 in there. i've seen 10 second 4,000 lb impailers before

and it doesn't take all that much to hit 13 with them.
another car that is really responsive to mods is the 1997-present pontiac gran prix GTP. OHV 3.8L V6 with an eaton blower. pulley, downpipe, t-stat, pcm (shift program) and you are hitting high 13s for about $1500 out of pocket!
anybody go to sears point (infineon now) wednesday night drags? i went to watch my friend drag his SHO with nitrous. saw a Z06 hit the wall at 70 mph. ouch! still had paper plates too!
real fun. my friends keep calling me the king of benchracers b/c i never take my car to the track. i guess i will have to. although it is kind of fun to annoy them by NOT racing :p
see ya,
Robby