H or X CROSSOVER?

Hi Folks

Running a 340 auto with an XE262 cam, 1969 HP manifolds and a factory TQ on a 1971 Demon (3.23 gears). Looking to purchase a 2 1/2 TTI exhaust and see that there is an X option and an H option for crossovers. I am looking for something with no drone on the highway, and not obnoxiously loud. This is a cruiser with 2 60 year olds taking a Sunday drive. What differences would I hear between the two. @VOETOM your input would be appreciated.

Thanks FABO
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