Ok so i was at my local goodwill yesterday when i spot a black case with a purge valve on it. Its a Gates Automotive tool case that once housed some specialty automotive tool in it. None the less. The case is spotless and very clean. Dimensions are 14X19X7 the same as a large pelican 1500 camera case. Anyways long story short. I need to buy foam trays and foam to build it out. Does anyone have any suggestions on where i should buy the foam? Any feedback would be much apprecaited