Well, Ive had a bit more of a look and taken pics.
Pretty sure the Kirby is a 3/4 shaft and the Briggs a 5/8...
You cant really see from the pics of the Kirby's.
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7433-img_4257.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7434-img_4258.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7435-img_4259.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7436-img_4260.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7437-img_4261.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7438-img_4262.jpg)
![[Linked Image]](https://www.outdoorking-forum.com.au/forum/uploads/usergals/2012/08/full-5302-7439-img_4264.jpg)
So am really not sure if its worth the effort or the new LHS piece to put an old B&S on it...
Ive seen a few new engines on evil bay, brand new, thoughts ?
http://www.ebay.com.au/itm/Briggs-S...pt=AU_Lawnmowers&hash=item1e706759a1