Well, i was just giving an exteme example. Im not sure if you can fit anything bigger than a the Ford heat exh. If you can though, it’d be worth it.
Maybe see about a resv. for the coolant. I got one from a Mustang Cobra, lets you have a extra 4-5qts. of coolant, in resv. waiting to get cooled off by the front rad. instead of just being rushed through.