HONDA T-REX 750

The Rex Wolfenden T-Rex Honda CB750 based racebikes have been highly successful in Australia.. their motors are 1000cc and about 120hp

link: http://www.mctrader.com.au/news-and-reviews/article/articleid/72640.aspx

...and a video: http://wn.com/Historic_Road_Racing_TREX_Honda_Perth_Period_Four_Motorcycle

1976 HONDA CB 750 BY EVOLUTION MOTORSPORTS

There's a long article on the bike at Pipeburn. Go and read it if you are interested.

via: http://www.pipeburn.com/home/2011/6/30/evolution-motorsports-1976-honda-cb750.html