Hi, I am trying to find informantion regarding a pillion seat for a Norton ES2. I am unable to find the desired seat in South Africa and have decided to attempt to find diagrams so that I can have it manufactured by a engineering firm. The pillion seat in question is the model with springs witch is similar in design to the main seat of the Norton. This is where I can use some advice from you. If you have details or a diagram with measurements regarding such a seat, it will be greatly appreciated. Thanks Hendri