the so called 377s and the 380s are not true sizes. they actaully only displace 368cc. i know cat also only is a 368cc. don't know about the po. the doo is a little more snappy than the cat top end is about the same...slow. i have no comparison to the po.
well the Doo is dual carb and the cats single so thats saying alot right there. I think the Poo is dual also. i know the 380's go really goo for there size. top out at 110 KPH and are quite the machine for engine size.
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