Sorry link doesn't work for me, but I can guess.
If you're talking about the KYB GR-2 (aka Excel-G) they are "kinda blah" stock replacements.
If you're talking about the KYB Gas-a-Just shocks, and you're not planning on raising your tracker, GET THEM. I got them for mine and they really do stiffen it up. It seems Gas-a-Justs are good higher-performance shocks at a reasonably economical price, without spending a fortune on Bilsteins or Konis. I get them for all my family's cars (that have spring suspension - my bro's Lincoln has airbag suspension all around so I put Monroe Sensatracs on it).
if you are, however, planning a lift in the future, there may be more options available like Old Man Emu etc.
James