The easiest way to tell is to ride it, if it goes 30mph, its restricted. You can also take the 8mm bolts from the transmission cover off and feel the boss drive with your finger. I don't think the dealer will derestrict it without you knowing because it would cross over into a motorcycle classification due to the higher top speed. These modifications are extremely easy to do and can be done in under 20min with the right tools, hell under 10 minutes with the right tools.