I'd do it myself and I have the tools but I just had a baby so my time is extremely limited... I'd also like someone local... I'm in NJ just outside Manhattan.
I purchased A single 18" AA Havoc which will be powered by a Soundstream DTR.3400 running at 1ohm and mostly listen to hip-hop. I want to be able to hit the lows hard... I'm not interested in SPL or the higher 50Hz frequencies... I want <40Hz. I was thinking of a 32Hz tune with about 6.25 CuFt. The dimensions I have to work with are 17"H MAX x 28"D MAX x up to 49"W and it's going in an 03 Cadillac Escalade ESV.