RX-7s, and rotaries in general have a very strong following in australia. Lot's of guys buy a EFI turbo rotory and stuff it into a light mazda ute or RX-2-4. Some of these things really fly, with street driven cars getting into the eights down the quarter mile. If think the quickest rotor in Aus is a series six (?, don't know my RX series to well, whatever the sexy curvy ones are) that runs in the sevens, but this is not a street car.
I don't know any websites, but have a look on http://board.performanceforums.com
or just ask someone there and they'll put you right.
Definitely post pictures of your ride mate