I just bought a 88 Z24 convertible. I owned one in high school and found one in great shape and jumped on it. It has 141K and has the digital dash. The oil pressure goes all the way up while driving and drops to half at idle. Is this normal? I don't remember my old one doing that but that was almost 20 years ago. Any input would be appreciate. Also does anyone know if the digital gauges can be easily swapped out with the analog ones?