That sounds about right, think that's what I got. I was looking at mine the other day trying to see if I could get the MAF far enough into the hole in the shield to attach the cone straight onto it and not have to use the alloy and silicone couplers but it was going to mean the TIP would be a bit stretched. The Jetex I have is very large and I'd prefer it not to almost be hitting the inside of the passenger side wing, I have to push the alloy joiner quite far into it to get it to fit.
I think I'm going to swap the Jetex for something like a HKS Mushroom or Apexi power intake, they're a bit smaller than the Jetex but still give similar air flow.