Any type of radiator mounted in most any position still should have some sort of cushioning so the tanks don't shake loose...Your's appears to be mounted solid, or are my weak eyes missing something....?

I like the bags, just gave up using them on cars because of the horrid suspension geometry when you drop the air... The unequal length a-arms on the majority of suspensions is the problem... I'd like to build one someday with equal length a-arms on the front so the air system and dropped ride height is actually something usable and not just for dropping the car in the weeds at the shows.... Nothing wrong with your setup, just the nature of the beast, I guess.

I've got a '37 Plymouth in the shop now.... a word of caution if you should find one for your next project; beware of skinny cowls when incorporating a lot of electronics, plus air conditioning, plus EFI, plus all the other bells and whistles! It gets to be an extended version of putting 12 pounds of stuff in a 5 pound box.....