carburettors, and the cars could be delivered with different gearboxes from ZF and with different rear axle options like LSD. Phase 3 which is also a term used when talking about the i400s was not a factory tune-up. Many racers of the time had their garages tune up the engine even further. Some made it across the mark and even today, engines can be tuned to deliver just over still naturally aspirated. The Manta 400 was produced in a total of 245 specimens following the homologation regulations by FISA (today FIA). But the i400 also spawned some other "i" models: The first was the i200 which basically was a GSi model Manta B with most of the Manta 400's appearance. 700 were made and are still considered a collector's item. The i200 used a tuned 2.0E engine delivering . There was also the i240, which is rarer as only 300 were produced, it is fitted with the i400 engine block but using a normal eight-valve cast-iron head from the 2.0E engine. First presented at the 1985 Geneva Motor Show, it produces and has a claimed top speed of . Also Irmscher themselves tried building the Manta with their own specs. The reason they were used for the 400 project was that in 1977 they had taken a 1977 Manta B 1.9S and put in a 2.8-litre H spec engine from the Opel Admiral of that time. Success was limited, even though the cars were on display at the 1977 Geneva Motor Show. The cars had been painted in some special colours giving it the nickname "Paradiesvogel" (Bird of Paradise) because of the rainbow like colour theme on the cars. However they did produce 28 specimens with the 2.8H engine delivering and of torque. The cars are considered extremely rare today. After the success of the 400 (and i200/240) Irmscher once again tried the 6-cylinder layout. This time producing the most powerful Manta B ever released on the public market, the Irmscher i300. In 1985, Irmscher bought 29,400 cars from Opel, which were on stock. The cars had no gearbox or engine but were fitted with the Phase 2 equipment. Irmscher installed the new 3.0-litre LE engine from the Monza and Senator models, which delivered and of torque. Power was transmitted to a big Getrag 265 gearbox, onto a 3.18:1 LSD rear axle, giving the car some awesome specifications. 0-60 mph