I found that probably this is a steering rack from LHD version of volvo 400 series
https://8.allegroimg.com/original/013757/994d4fcc41cba0c3ffd7ab8680a8
And to RHD volvo 300 series would fit a LHD 400 series steering rack
I have one from LHD volvo 460 and i could measure her dimensions (lenght ...

Ok, so i found something interesting about 300 series power steering rack, but first i need some more information.
I found only that picture of 340 rack.
http://i88.photobucket.com/albums/k163/bogbasic/steering_racks_old_new.jpg
Is it the same rack as in 360, or in 360 was different?
If someone ...