From the dimensions given earlier, it appears that that sub is too large for the opening. I generally try very hard to find suggestions within the stated budget, but in this case, given the size constraint and the performance potential of the SB12-Plus compared to similar sized subs, I have to think it's the best option if the budget is flexible at all. It seems to me that there is a serious performance sacrifice for putting any of the lower priced subs of that size into that space. Budgets can be a real buzz-kill sometimes.