I remember reading that the KB inlet manifold was around 70mm (correct me if I'm wrong). I will be pulling the blower off real soon to install 30lb injectors and while its off, would it be a good idea to bore it out to 75mm so I can use a 75mm TB and spacer? I dont remember reading if anyone has done this. I currently use a 65mm Explorer TB, I'd like to go right to 75 if possible and practical. I'd like to get all the parts installed before getting dynotuned in the spring. Thanks again everyone!