Do you have to remove the heads to replace valve stem seals on a 1995 mitsubshi 3000gt non turbo?

Yes, to replace the valve stem seals on a 1995 Mitsubishi 3000GT non-turbo, you typically need to remove the cylinder head. This is necessary to access the valve springs and retainers, which hold the valve stem seals in place. Once the head is off, you can replace the seals and reassemble everything. It's advisable to follow a service manual for detailed instructions and to ensure proper reinstallation.