making custom A-pillars in a punto

[Punto31CRH]

Just wondered how to make the custom A-pillars I have seen around which house the tweeters...

Any help would be greatly appreciated

 

[volxstu]

Cut a Hole. Splint a glue the housing in the right place, stretch and staple some fleece/ Grill cloth over the top, fibreglass and fill to the desired shape. then sand and fill, sand and fill untill its smooth and cover.

 

[Punto31CRH]

Cut a Hole. Splint a glue the housing in the right place, stretch and staple some fleece/ Grill cloth over the top, fibreglass and fill to the desired shape. then sand and fill, sand and fill untill its smooth and cover.

will p40 do the trick when i fibreglass and fill it?