i seen some mazda rotory's built up too 450 horses,,but they were locktite motors at that point,,and main seals allways blows out,,,plus one more bad thing about the rotary is it pulls crude motor oil from the block to burn on the rotors like a 2 stroke motor bike,,thats why they can get so many rpms,,but very destructible by the time you build them up that far and cost you a ton! he charged atleast 20,000!! for 400 horses,,,,good fast little cars,,just not dependible,,,for your dollar,,its impossible to beat a v8,,,heck some sites are tearing out rotor motors in 80's and 90's mazda's and sticking in ford 302's and runing stock 12 sec,,and only loosing about 200 pounds
madza is ford now,,plenty of cheap conversion kits,,just flip over the main cross member and the hole motor fits under the hood,,you can build safely too 500 horses and keep your price about 10,000,,lol,,and a mazda with a 500 horse v8 is unbeatible,,car still light<~~my cousin is going to do it,,just to have a cheap muscle car,,that will blow the doors of a dodge viper!!,,hehehe