I've just put in a soundstream picasso, 1 farad cap and a phoneix gold crossover in the aclove where the hicas computer resides (If the hicas computer is the one on the left hand side of the boot then the amp is sitting directly under it, I had to bend the computer bracket so that the computer sits about an inch higher than standard). Also got a temporary 1&1/2 cubic ft box with a 12 inch soundstream exact floating in the boot which will changed to a 1 cubic ft box and anchored into the right hand corner possibly next week. I have had this for just over a week now and haven't had any problems with the hicas.