road hog mk2 a panel arches

[underkut]

After many years i have finally fitted my fibre glass road hog mk2 front end.
Downside is i do not have the arches to fit on the A panels.
I contacted the manufacturer and they confirmed they no longer make them.
Does anyone know the closest type of arch to cut down and use.
I may be abe to put some picks on at the weekend but coincidently there is one on fleabay at the moment for a meer 100pound.

[Tupers]

I would have thought Miglia arches would be the closest option.