I have a set of Struts which are different. I would like to know what they have come off.
I was told they were 1200 disc brakes. The tube is 45mm wide.
The number on them is: 54303H7405 AMPCO.

The rotors off a 1200 B110 will not fit but the rotors off a B310 will.
Both the brake calipers off the B110 and the B310 do not fit.

Can anyone enlighten me.

Thanks swansong

Search for Nissan 54303-H7405

They may be late-120Y judging by the H74 Applied Model Code and similar part numbers listed for B210 Japan (but they used Tokico or Atsugi)

Note that B310 came with different size rotors and different size calipers. The A12-powered B310 used 45mm struts and smaller brakes which is slightly larger than B110.

Photos will help ID them

I have the same exact struts on would like to know what they came off of as well. It seems that nobody has an exact answer. A Google search does not lead to anything conclusive

It is from Datsun Sunny 1976-1978
54303-H7405 STRUT, LH

AMPCO was a Datsun factory supplier

B210 used many different strut part numbers, but they look mostly identical. Those that start with H10/H50 have the small stub axle/large bearings, and those that start with H74 have the large stub axle/small bearings

What I have found, in general. . .

Small Stub big Bearing - 1000, 1200 and late 120Y(PBR Caliper)
Large Stub small bearings - Early 120Y

But, struts have been interchanged between models for years. . .