Does anybody know if i bought a 2.4L throttle body would it mount to my 2.2L intake manifold?
direct bolt, no, BUT, if you're willing to do some custom fabbing, anything will work.
if you're talking about a pre-98 2.2, then you need to do ALOT of work. the throttle body is integral to the upper plenum, so you'd really need an entire new manifold.
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If it's a '98-up LN2, then the TB off a 2.3L Quad4 is what you want. And that'll take a lil' work to make use of too.
Go beyond the "bolt-on".