Well, I just bought my brand new ones for $160 shipped. So, your price isn't saving them much for being used and broken.
If I wanted a set to play with, I'd buy them. But then I like to tinker.
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'13 Mustang 3.7V6 - MT82
'00 GP SE (L67 Swap, XP, Headers, 3.25")
'98 GTP, '01 Bonne