gor another one.. deliberate modification within 30 cm of a load bearing member...
weld on strut braces?
I'm sure there must be some other rule involved here... anyway, back to boot mounted rads

I'm still curious if you'd be better drawing air from uder the car and out like the rear, in through the sides and out through underneath/bootlid or rear panel.. there must be some kind of expert on here who could explain which one of these options would require minimal assistance from a fan?