Thanks heaps for the reply.
Yea i just got it apart this arvo to pull it apart. And noticed the observations you stated.
The 5sfe guts don't fit unfortunately

and neither does the 5sfe shaft (not deep enough taking into account the guts can't go in all the way). Also the hold down bolt positions are different.]
I think your idea is the best so far. i can't think of any other way. I need to work out a way to adapt the 5sfe. I'm handy with a grinder and welder if need be lol. but we will see. will have ot be creative. Cause even the bolts to hold the guts in place in the original housing are in a particular position that needs to be near exact to have the precise for the clearances with the shaft and gears on the shaft... and i don't trust my own hand and eyes to mimic that exact precision.
GAH!
I'm gonna have to bite my lip and start jotting ideas.
This is the final stage of my build. I have been keepin a detailed diary including the customising of my throttle body, water outlet and rada rada. Would you guys be interested if i posted a 'how to' thread for those who are keen but never done a tight budget 5sge [While maintaining original loom and ecu]? (once i solve all the mysteries and get some solutions)