I am planning a trip down to San Diego from the SF Bay Area. I am concerned about the trip back on I-5. I plan to charge at the San Juan Capistrano supercharger, and my question is whether I will be able to make it over the Grapevine to the Tejon Ranch Supercharger in my 85. Google maps shows the distance as only 137 miles, but there is a significant climb up before getting to Tejon Ranch. Any pointers would be appreciated. Thanks in advance.