Looking for 1/48 FN 0.50 gun pod. Help!

I’ve been trying to find, without luck [:(], a pair of 1/48 gun pods like the following:

http://www.airforce-technology.com/contractors/weapons/fn_herstal/fn_herstal5.html

I haven’t seen them either as accessories nor included in a kit. Any help will be appreciated [Y]

What for? Well, I am building a Mexican Navy Super BO-105 like this:

http://www.semar.gob.mx/galeria/aeronaves/bolkow/grandes/super_five_03_gde.jpg

The closest basic shape would be the gun pods on Monogram/Revell’s 1/48 T-28D kit. But the front and bottom contours are different .

Thanks. Yes, I guess I’ll have to reshape some other gun pod or fuel tank but it doesn’t look like an easy conversion to me.