I am purchasing an upper intake plenum soon and I have been comparing ones on AmericanMuscle. I was going to buy the SR performance one. I know it's not a high end brand, but it's in my budget and has fairly good reviews. It's $139. I also found a used trickflow upper intake with a 75mm throttle body for $100. I wouldn't use the 75mm right now, but could save it for future mods. Which is the better option? Which will yield better numbers? I just need someone with experience with these products or knowledge of them to help me out. Thanks in advance!