The TR8 has a tachometer with a 5500RPM redline, The TR7 tachometer has a redline of 6500RPM. I’ve also seen a TR7 tachometer with a redline of 6000 RPM
6000RPM redline TR7 tach:

6500RPM redline TR7 tach:

5500RPM redline TR8 tach:

The TR8 has a tachometer with a 5500RPM redline, The TR7 tachometer has a redline of 6500RPM. I’ve also seen a TR7 tachometer with a redline of 6000 RPM
6000RPM redline TR7 tach:
6500RPM redline TR7 tach:
5500RPM redline TR8 tach: