Radiator shroud...

I swapped out a slant six for a mildly built 360 in a '69 Valiant. I kept the stock/6 radiator and had a local radiator shop custom add two rows making it a 4 row radiator. (some folks tell me I should have went with 3 rows) Anyway, I just wanted to keep it looking stock. On a hot 95 degree day as long as I'm moving the car runs between 185-190 degrees. As soon as I'm stopped in traffic not moving for a couple minutes it jumps to 205-210 degrees but then shoots quickly back down to 185 when moving again. I do have an 8 inch electric fan w/manual switch for when it runs hot but doesn't make any temp difference when stopped and idling. Would like to add a wider radiator shroud than what's on there now. I've seen wider shrouds on stock 340 radiators and was wondering where to get one for my radiator. The photos show a 340 motor with the wider shroud and the other two photos show my /6 and 360 w/rebuilt radiator. The #'s on my radiator are: 2949072 and underneath those #'s are 38)086 The shroud mounts to my radiator with four bolts - two on each side. I can't find a stock-looking shroud anywhere. Any ideas or info would be greatly appreciated. Thanks!

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