Just finished a 290 mile drive in my 240Z to finish breaking-in the engine today. Travelled from the San Francisco peninsula and picked-up a buddy in the east bay, about 70 miles away. The second stop was at Rebello Racing in Antioch where my engine was rebuilt. Showed the completed car to Dave Rebello, so he could see his 2.7 upgrade installed. Dave complimented me on the car and pointed out that my harmonic balancer has the beginning of a wobble. Nothing to be concerned about, but he suggested it be replaced down the road. He also suggested that rebuilding the distributor could improve how the engine runs on pump gas. We filled the tank and crossed the San Joaquin river over Antioch bridge into the delta proper. The SF delta is full of winding levee roads with a 10 to 20 foot drop on either side. On one side is water, the other drops down to farm fields or orchards. Safe speeds on these roads ranged from 25 to 70 mph with all kinds of road conditions. We passed through several small delta towns, Isleton, Locke and Courtland, making a few stops at delta resorts for refreshments and lunch. We made it almost all the way to Sacramento, traveling the back roads. After dropping-off my buddy, I got caught in rush hour traffic for about 90 minutes on the way home. I travelled a total of about 20 miles in stop & go / very slow& go traffic. Even with the heavy stop & go traffic, the car still got 23.4 mpg. Better than I expected! Without all the stop & go traffic, I’m sure it would have easily exceeded 24 mpg. I still have a squeak under the floor in the differential area. As I have changed the u-joints in the half-shafts, I’m thinking it may be the diff mount, a loose exhaust hanger or the exhaust pipe rubbing somewhere. I’ll take a closer look next weekend. Now that the engine has over 500 miles on it, this weekend I’ll change the oil, re-torque the head and manifold bolts. Sorry, no pics. I forgot to charge my camera battery...