Pod Air Filters to fit GL500

Hi All, I'm new to the forum. I am building a street tracker using a 1982 GL500 .
I am struggling with fitting pod air filters as the gap between the carbs and the frame is fairly small . I have thought about trying to mould standard pod filters around the frame. Its a posh was of saying I was going to bend them out of shape to fit...!!! Has anyone used shallower filters or is there another workround to fix this problem.?

Many thanks in advance..