mustangs unlimited sells the FMS heads for just $800 something. That's the cheapest i've found so far. I don't have the cash for the wheels or else i would. sorry.
If you hear of anyone with some lowering springs for sale let me know. No BBK though.
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1996 Mustang GTS
K&N, removed air silencer, 3.73s, turndowns after H-pipe (no mufflers)