Went on show yesterday and got excellent deal on SAECO lubri-sizer, looks like this one http://www.redding-reloading.com/pages/lubrisizer.html . Must be older unit (its black) and looks like wasn�t used for years.

Question: Can Lyman or RCBS sizing dies and top punches be used, or modified to be used on this unit

Thanks, Onty.

Onty,
The Saeco sizer/lubricator will only take sizer dies from Redding/Saeco, or Stillwell, down in Texas.
Lyman and RCBS sizer dies are interchangable.
I have frequently seen Saeco sizer/lubricators on ebay with 5-10 dies included, and you could use the other lubricator for a second lube. - Lew

Can Lyman-RCBS sizing dies be modified to fit SAECO lubri-sizer, or can I modify lubri-sizer to use standard Lyman-RCBS sizing dies? There are so many of them around and they are available locally, so I don�t have to wait few weeks for delivery from USA.

If you can do really good in-line boring, bushing, and reaming, yes. Take the measurements from each lubrisizer and die and have at it.
I did not have a machine shop, so bought really cheap on ebay.
I like the Saeco much better than the Lyman, because it has a much stronger linkage, and it seems to push the bullets through straighter. - Lew