Sorry BM. Replied to your PM a moment ago. The combo you mentioned isn't for me in my experience on the Mito WC. The 2660/5-ring conical is far superior particularly on the bottom end. The 2562/6-ring to me is very flat - massive top end (and thirsty) but in sedan bottom end is important - particularly in higher traction. No-one runs the 2652 pipe anymore that I know around here.