Sorry, I forgot about this. The 200 rad I have is frameless unfortunately.
I do have a 300 rad frame which I imagine is similar. The sides are just folded sheet - if you have me the dimensions of what you need I could knock something up if you like?
And just to add another option to the mix... I had a series rad on my old 200tdi 109, with a 300tdi intercooler fitted at the nearside and an aftermarket oil cooler in front of the main rad. It required some minor front panel surgery to make it all fit.