Raf,
if you live in Bucks you are welcome to look at my +4 T16 engined car.
Mine has the orginal arrangement. There is an iduction hose running up the inside of the wing that stops just before the front bonnet catch. It feeds into the orginal airbox that is on a metal support above the washer bottle. The hose then heads into the throttle body. I have fitted a K&N filter in the airbox.
I have considered extending the hose to over the top of the radiator but never got there.
I found a photo & I will post it.
John
