Posted March 4, 200718 yr ok I hate to sound like a noob but I've never delt with restricted space and a sealed box before so the box I've had built for my 03 silverado ex cab is for 2 10's firing forward under rear seat it has a total of 2.4 cu. ft. so after displacement wich is 0.12, cu. inches per that should give me about 1.08 cu.ft of airspace per sub right.The box was originaly going to have 2 RE se 10's but have since decided to try the ssd's since they have similar specs and recomended airspace, and I dont want to F*** up so thanks in advance for any help Edited March 4, 200718 yr by Dmillz224