ok what i want to know is… will the T1R header for the b18 fit my b20…i know that all b-series stuff is pretty much interchangeable so i know it will bolt up…but what i need to know …is will it clear my oil pan?? and the length to the cat…??
i dont think i will have a prob with it hanging to low…so im not worried about that…
…i searched about it and peeps say try it but i havent read on here that anyone has it for a b20…let me know…thanks
anything that fits on the b18 block will work for the b20, including any header
yea …T1R is a nice piece …im trying to find out if they make just a muffler for my setup …63mm inlet 
thanks for the replies guys…i think ima go ahead and get it 
If it’s the 4-1 T1R you’ll need to notch your crossmember.