the 202 holden is a 3.3 ltr engine, you can squeez some good HP out of them too, mine has around 320 to 340 flywheel hp on straight lpg

This one here in an old 1958 FC Holden has 555 rear wheel HP.
It runs 9's and 138 mph over the full quarter mile
http://www.youtube.com/watch?v=rHn0zzaAxv8&feature=related
http://www.youtube.com/watch?v=yqCjwgQasCg&feature=player_embedded
http://www.youtube.com/watch?v=ZwCbK9s8jxw&feature=related