I second this.
Save your money, and do the following.
Remove the whole intake line from throttle body forward, pipes and all. Stash it in storage.
Now move the battery over to where the air filter/box was. This requires some expense on good quality starter/ground cables but it's worth it.
Now, hit a junkyard and buy an AFM from an '82-83 Supra. Quite magically, the pinout on teh connector is the same, and it is 3" on both sides. Perfoect for a cone folter.

Now get on eBay, and buy an elbow fitting that is 2.5 or 2.75" on one side and 3" on the other. Silicone is nice but good ol' rubber is fine too. I bought one for about $7.
Wit hsoem work, you can stick that AFM w/ cone right on the end of the TB, using the elbow, now that teh battery is out of the way.

The bigegst PITA of this conversion is taht you have to extend the cable/connector for the AFM to the ECU. Spend the time and make sure the conenctiosn are good, using quality pins etc.

FWIW the Supra AFM is not necessary but makes it easier, sicne you can't just stick a cone on teh end of the OE AFM (hole is too small).

Here's a pic of mine