If you're considering going that route, go ahead and get a few 4" aluminum pieces and make a nice FWI for ~$100 including filter. I got a 22* bend and a 6" straight piece and a pair of couplers for $60 through Summit plus the filter from Autozone for $20 (discount) and a roof flashing for a few bucks at Lowe's. I'd go out and take a picture of my setup, but the majority of my engine is strewn about my garage, so maybe in a few weeks...
But, seriously, that flex tube will probably not flow as well as your current setup, whatever it is. And, it's thin plastic which = major heat soak. Personally, I'd go with a HAI before a flexi 3" FWI. The 4" flexi stuff from Intense or ZZP may be a better bet if you want something flexible.
