i have one too... did a trip up to exmouth and back with it along with a few runs down south.. never affected the temps.. though it was rather hot due to 40 degrees + but it did have good flow in the right spots... and never had a stone single stone chip. I know you need to remove it regularly due to weathering etc.
My brand is 'Abracardarbra' ... im looking to sell mine if i get the right price
