it doesnt come too close together with the 150T gates belt and the only way they could ever touch is if something let go, which usually means destruction anyway. i'm running the gates belt with 2 tensioners in the standard location without any troubles, only think that didnt fit straight away was the lower timing cover which needed to be trimmed on the top intake corner to stop the belt running, but from memory you have to trim covers with the tensioner relocated anyway.