While I can't help you directly with a wide body, I might be able to point you in the direction of what might be the most custom early A I have ever seen. Maybe you can get some inspiration from there
this car single handedly has made me consider selling my '68 to get an early A because of how amazing it is.
He is also working on a corvette on his page so his posts switch from posting progress on one car, to posting progress on the other.