Pretty sure the FE3 was J Spec only mate. I dont think the FE3 was ever in a Aus deliverd TX5. The Aus delivered ones have the 12v SOHC F2 engine. In NA form i think the FE3 is good for 6 or 7secs 0-100km/h. WOuld be a gun project for a TX3 if you could make it work. There is a guy with a boosted FE3 which puts down 13.6 1/4 mile. Its in the "Information on mods for TX5" thread.
http://www.adelaidejap.com.au/front%20cuts.htm