The first generation of the Lexus IS-series was a nice vehicle. In U.S. it was known as the IS300 and the rare IS300 SportCross, which was an interesting little wagon. Offered with the updated but aging 2JZ-GE VVT-i engine it produced 220hp and at first was only mated to an automatic transmission. This was not the 3-series killer Lexus was hoping for.
Recently an IS200 owner in Netherlands decided to upgrade his 160hp engine to something bigger. In fact he went really big, with a 5.0-liter V12 engine out of the Toyota Century which he somehow managed to squeeze into the little IS chassis. IS-F it is not but it might be the next best thing, if not better
The Toyota Century is a limited production super-luxury vehicle designed for the Japanese market. It is currently in its second generation since 1967 and it still looks about the same. The Emperor of Japan is driven around in one, so think of it as Rolls Royce but without all the cheesy bullshit. It is currently the only Japanese vehicle utilizing a V12 engine.
The 1GZ-FE V12 engine is a rather light V12 engine; made of aluminum with magnesium valve covers. The power is estimated to be around 310hp and 355lb-ft of torque, curve of which is probably amazingly flat. Designed to propel a heavy luxury vehicle, it probably wouldn’t be my choice for the little IS but I am sure that it will be a hoot to hoon.
The V12 is said to weight around the same as a twin-turbo inline-six from the Supra, which is a common swap into the IS (I would love to drive one!), and hopefully the installer managed to shoe-horn the V12 deep into the chassis. From factory the V12 comes mated exclusively to a six-speed automatic transmission but the builder says that a manual is in the works for this project. I will provide updates as they become available, but judging by the below videos the car is complete. Note how smoothly the engine is running.http://www.youtube.com/watch?feature=pl ... bg2p8dK3jYhttp://www.youtube.com/watch?feature=pl ... v3OJTV5joo
info taken from http://hooniverse.com