Thanks, guys.
The big holes in the "bumper bar" seem to be the same for Lowlight and later cars but there is the possibility that the Lowlight bars are 'flatter' between these points. Hard to be sure because my bar was already bent out of shape. The later cars also seem to be different outboard of the 2 big holes, again with a steeper curve and also an extra 1/2 inch of length to keep the same dimension between all those holes whilst still allowing for the curve. Does that make sense? I'll try to get a photo done tonight to show what I mean. In an ideal world I'd like to get an overhead photo of the Lowlight bar showing just how curved it is meant to be along its' length
David. Great pic. It looks as if someone has had the exact same problem that I'm having now! My original blade was cracked through one of the big holes anyway, a design weakness perhaps, so I had to use a later one without realising they were different. My plan for adapting a later one is almost exactly what you have on sow, albeit with the 2 halves joined end-to-end.[frame]

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Here is the Lowlight parts assembled onto the later bumper bar. All the outboard holes line up well enough but the 2 middle holes that hold the cover plate on are about 1/2 to 1 inch further apart.
Colin. Any dimensions at all would be helpful. Setting the right curve will be the hardest part. Maybe a string line through the outermost bolt holes and then a dimension from the string to the rear face of the bar at each other hole?
I think the plate was meant to go on the outer face of the chrome by virtue of a small extra few mm on mine where the middle cover plate thingy would be too big to comfortable sit flush at the inboard edge if it was sat behind the chrome. I'll try and get a photo of that tonight also.
Off to the Doctors now so must rush.
Cheers
Rob