I'm not a tech inspector so won't comment specifically on "allowed".
Remember, safety rules/regulations are minimums. In many cases it doesn't take that much more $$ or effort to make things much better for everyone.
Some of the general thinking about the rear location is access for outsiders and ability of the control to continue to function in the event of any incident. Rare chance for a vehicle to come to rest in a vertical position either nose or tail up, much more likely horizontal, right side up, on one side or the other, or upside down.
Consider this along with the good advice and sources to check out from Milton, Glen, Terry, and Robbie and you should come up with a good location choice.
Hope to see you running safe, having fun, and going fast in April.
Ed