Hi! First off, I want you to know I'm in no way a professional. But I will offer you my best advice sooooooooooooo...... 1- Are the port dimensions correct for a 32 hz tune? I keep getting different measurements depending on the port calc I use. I think carstereo.com is what I settled on. I'm almost 100% sure that the dimensions of the whole box itself can change the hz of the tune, along with the port. So with those port dimensions it could vary, for example if your box was 20" wide or 35" wide. I'm pretty certain that the Hz would change. 2- With the port area only being 46.5 sq in instead of the recommended minimum 67.2, will port noise be a major factor if I flare the ends of my ports? If I understand what you mean by flaring, you should flare the end of your ports all the time to minimize port noise. But you should also try to get up to the minimum of the factory requirement! Add a inch to the wideness of it maybe while making the port length shorter to try and stay around that 32 Hz mark that you want. 3- With the port area coming in a little low, will it affect the cooling ability of the subs? I'm pretty sure it won't affect the cooling ability of the subs, I mean if you think about it subs that are in sealed boxes have 0 port area. I hope I helped you! Good luck!