Thanks for the reply, i learned a lot. Trial and error taught me: stamped bended side down. 31 roadster in parts and my inexperience. the a161 had a straihght top but i noticed that the lid was slightly bowed out , so interference upon opening . when i madt the a161 curved out the a161 there was clearance on opening. I had to slot the drill holes. Idont know the manufacturer of the a161. You taught me alot.