check your math.... the smaller one is about 1.4 and the larger is 2.3the box that didn't sound good is approx 3.6 cubes, the other one is approx 2.7 cubes.
I can whip you out a sealed box for 2 tens in no time flat, but being that I don't have the vehicle it could only be so "custom". If your interested shoot me a PM and we'll have a chat.PV, Thats a possibility. I also might just try to make one myself. However I dont have alot of the tools that are probably required. Nor the time...
I KNOW the Mr. Marv boxes are good.