please dont take this wrong
"I'm looking at a 1997 Eclipse GS, 4cyl Automatic" <------ that horrid PILE is a dodge NEON! id u want a piece of crap that will burn oil and crap out n months go ahead abd buy it, and 6k for 106k mile GS is WAY TOO EXPENSIVE!
yes i drive a GSX.
the GS, RS all had the 420a motor....same one that is in the neon.
the GSX and GS-T's had the 4G63 (best motor!!!)
my GSX has 160k on her and runs like a top! shes had a few minor probs here and there but nothing major (knocks on wood)
if u just like the eclipse's and dont want to spend a lot of money on a GSX or GS-T badge then go with the RS or GS....but your going to be spending more money in the long run if you go with one of those!
find a GSX or GS-T in good shape and pay a good price.... vs buying a cheap GS or RS and dropping a lot of money later, just trying to help good luck with ur hunt.
sorry if u took this the wrong way!
GS & RS's are piles
GSX and GS-T's are top of the line awesome cars!