lightning MAF on 00 gt
 

i am putting a lightning MAF on my 2000 gt w an ati procharger. what i need is a reducer to go from the intake tubing to the 90mm MAF, the size tubing i have is too small for the 90mm what would i use because i know people have done this conversion before if anyone knows what they used please let me know any help would be appreciated. i found a piece of plumbing i think its for a toilet (lol) at my local hardware store but i would rather not use that. the size i need is from a 3"ID to a 4"ID as short as possible but anything is possible.