Well, in tearing down my L67, the coolant elbow in the intake was damaged. I was gentle, but it separated at the o-ring and left a portion in the intake. This left me having to get a replacement and ZZP is pretty high. I thought we had carried these at work before so I went looking, sure enough there they were. Two in a pack (upper and lower) for $3.99 in the Help section. Beats the pants of ZZP's $6.99 and $8.99 EACH!
Here's the part number: 47065
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne