These 3800 heads are completely reconditioned with aftermarket valve springs/retainers.

• Burned and blasted
• Valves are turned
• Seats are recut
• Crack checked
• Vacuum checked
• Resurfaced
• 90# valve springs
• ZZP valve spring retainers
• ZZP valve seals installed
• Ready for paint

They are sold as a pair. Heads are built to order and take 1 to 2 weeks to ship. 

L67/L32 are for supercharged cars, L26/L36 are for N/A cars.