1968 Dodge Dart GT Sleeping Beauty?

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I got these on order. 2 1/2”​

FLOWMASTER FLOWFX SERIES MUFFLERS​

• Fully Mig-welded for maximum durability
• Bright 409S stainless steel construction
• Reversible “straight-through” design
• Compact case fits in tight spaces
• Deep mellow performance tone

The shop is telling me about $750 for a set of duals. Less with me providing the mufflers.