Celica into their Toyota Supra GT500 race cars. British sports cars (such as MGs and Triumphs and Sunbeam Alpines) from the late 1960s and early 1970s were attractive and light-weight cars that had excellent suspensions. However, they were known for troublesome electrical systems, modest power levels and a certain amount of unreliability. It is popular to take one of these small classic sports cars and add a more powerful engine. The original manufacturers did this when the vehicles were current with the MGB GT V8 and the Sunbeam Tiger. The all-aluminum Buick and Oldsmobile V8 engines are a traditional choice for these cars. Swapping the stock MGB all-iron 1.8L 4-cylinder engine and 4-speed transmission for a Buick 215 V8 and a modern 5-speed transmission actually improves both cornering and acceleration because it reduces the overall weight of the car by about . Power is approximately doubled. Derivatives of that classic General Motors engine, the 3.5L, 3.9L, and 4.2L Rover V8s are also frequently used. (The original Buick / Oldsmobile, the Rover, and the related Morgan-licensed V8, are simple bolt-ins.) Although the more recent "narrow-angle" 60-degree Ford and GM V6 engines—notably the GM 3.4L "L32"—are more compact than the Rover/Buick and Ford V8s, they usually do not equal the power-to-weight ratio of the popular 90-degree V8s frequently swapped into smaller cars. These V6s can, however, be very cost-effective and easier to fit into a variety of car bodies. The Ford 302 (5.0L) V8, with its cast iron block, results in spectacular power-to-weight ratios for straight-line acceleration. If the Ford 302 is fitted with aluminium heads, intake, and water pump, the resulting engine only adds about to the front of an MGB, and is substantially more powerful and lighter-weight than the iron-block six-cylinder found in an MGC or TR6. An aluminium 302 performance block is available that weighs 60 lb (27 kg) less than the common iron version, and can be found in displacements of 331 and 347 ci, but those are significantly more expensive than using the common 302 internals. The Nissan SR20DET is an all-aluminium fuel-injected DOHC turbocharged 4-cylinder. This compact engine, along with the very compact, light, and powerful Mazda 13B rotary engine, have both been transplanted into too many different cars to assemble a complete list. Common engine swaps Note: These are the most common examples and are not an exhaustive list, just a representative cross section. See