I used one of these the first time I did my DIY DCIA:

http://www.sfxperformance.com/parts/SPT9479.htm

It needs to be cut down to fit and also needs a 1" high piece of 3" silicone to connect it to the TB.

I still have the modified Y pipe and a ready to fit 1" high blue 3" silicone piece if someone wants it - $15.00 plus shipping costs. I may still have two 45 degree blue 3" pieces as well to connect to the two 90 degree aluminum pieces that then connect to the inline air intakes. If I have them, I would include also.

TTYL

Ron