DON'T buy anything, DO MORE RESEARCH.
You need a 5 spd trans from a 00-05 2.4 4g64 ECLIPSE. The 420a is a completely different engine, that trans doesn't even fit the 4g63 eclipses let alone the 4g64's, even if that 98 eclipse had 4g63 it wouldn't fit your 2.4 8g.
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