dunno, but i thought the rb20 was a 2.0l, whereas the Australian Ford six is a 4.0l inline six. wouldn't this mean that it would be bigger by a reasonable amount???

also, a thing i forgot to say in my earlier post was the availability of performance parts for the Ford inline six. you can get Powerdyne supercharger kits promising 200rwk+, from $2,500. for the fj20t to get the same power to weight as the stock inline six you would be testing the reliability of the fj20t? still, i know little about the japanese tech. engines, and i can see the advantages of using such an engine...

*edit* i don't mean this like i am a know-it-all, i am asking questions so i can develop my mechanical knowledge... big words