I currently have a bbk 70mm tb and im planning to get a plenum. I was debating over the c&l or accufab and decided to go with the accufab eve though it is about 30$ more from ebay. BUt my other concern was will a 75mm tb make a significant amount of difference over my 70mm bbk tb?? also if i do buy a 75mm tb itll cost me about 200 more..... im thinking I should just get gears with that amount of money... 
