Rear shock spring length

[FST4RD]

I have a 1996 cannondale super v 4000 dh, currently running an air oil shock. I want to switch to a coil shock. I have a replacement 200x52 shock for it, but no coil. According to the Fox service website I need a 1050 pound spring!
I have come across a 1050x1.6, 950x1.6 and a 950x2.21 spring to suit.
Will any of these work? Or will the bind or be too long?

 

[OllieJones]

On the air shock you have the 52 mm (2.05Inches) refer to the stroke of the shock. Assuming you have a coil shock with the same stroke, which is important to maintain the correct travel of the bike you need a spring that can compress 52mm or 2.05inches before it is fully compressed on itself. I think you'd need the 950x2.1