Ok, I've got the toploader, it came with everything that came off the back of the 289.

I would think that I would have to use the Y block bell housing and fly wheel. Yes?

Which means the hole the box inserts into will have to be reamed out about 5mm so it will fit.

If not what do I use? Trev.

The opposite applies, remove gearbox front cover , hold in lathe and machine cover to fit hole in bellhousing.

  AussieBill            YYYY    Forever Y Block     YYYY

 Down Under, Australia

Ok, thanks