As much as I agree the difference between the 323/328 is a big HP change. 175hp/170tq vs 231hp/200tq for the 328. thats 50hp...
Now both can benefit from 3stage manifolds w/ tunes (roughly 210hp for the 323 and 250 for the 328) plus the MILVS.
Actually if you really find one a 323 w the 3stage and tune is close to the 328 (minus the tq because 0.5L will make some difference)
Last edited by neilvan; 06-14-2018 at 01:17 PM..
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