if you have a 2g eclipse then yes, the big t28 bolts right in uses same water lines and oil lines..
if you are puting it on a 1g eclipse then you would be better off going with a big 16g or other.
also you might have a 2g manifold which might be confusing you.. they are identical except the runners etc etc... they bolt up identicly so no worries there.
-E
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