One advantage of the early Datsun cars is that many of the parts were interchangeable — engines, transmissions, and suspension setups, for example, were all similar enough to swap with minor modifications. This allowed the Datsun 510 to be easily upgraded from the 1.6l - L16 engine, to the 1.8l - L18 engine, and later to the 2.0L L20B engine, and to go from the four-speed manual transmission to the 63 mm (shaft-center distance) five-speed transmissions made available for the early (S10) 200SX and (A10) HL510, and the 71 mm five-speed transmissions used in the (S30 & S130) 280-series Z cars, 1980 to '83 (S110) 200SX, the 1977 to '80 (810) 810, the 1981 to '84 (910) 810/Maxima/Bluebird, and the C210/R30 series of Skylines. The 71 mm five-speed transmissions also saw extensive use in the 620/720/D21 series pick-up trucks in both long and short (rare) extension-housing versions.