Hey drift squad i also just put a HKS 2535 on my r33 gts-t for the oil return line i went down to pirtek and got a hose to connect it all togethor. The problem was the hose i got was to heavy duty and would just kink so i had to cut this hose in half then get an adapter to connect the 2 hoses togethor, this gave it just the rite angle to finish conecting up the oil return line. Hope this helps and goodluck with the install let us all know the results