I'm 99% sure there's no difference besides the cams, timing and stroke between the two but still super new to the platform and wanted to verify before ordering the Hindle exhaust. the kid before me stripped the body off and chopped the exhaust and it's kind of obnoxious.
If comparing a 49 state 750 to 49 state 700, it's just stroke. 700 also has slightly higher compression pistons, and some racers would put 700 pistons in a 750. Please post up some pics of that tasty exhaust when you get it.