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[QUOTE=UnhipPopano;272272]It would help to know if the car will primarily be for road or track. The list itself is a little thin in detail. For example the radiator assembly consists of radiator, 2 fans, 2 horns, shroud and mounting hardware. If you get a new a new radiator, you will still need the other pieces. Then there is a couple of parts like seats and transmission that did not make the list.[/QUOTE] Road with maybe occasional track day. Currently want to do an S and convert ...
[QUOTE=Gordon Levy;270206]On the dyno the difference between the J pipes and 4 into 4's on a 347 was 75 rwhp.[/QUOTE]
[QUOTE=Jeff Kleiner;270076]What engine? Coyotes are quiet anyway if that's what you are going to be running. Engine type and specs are generally the determining factor as far as noise level. All things being equal I think the sound level is pretty similar between the J and 4X4 since they're going through the same muffler either way. Jeff[/QUOTE]