I really cant say the that would have worked, because the IS-F is pretty small compared to most other Lexus models and it has the biggest engine second to the LF-A. Let’s face it, even if we are Lexus/Toyota Fanboys, the IS-F is fast, but not supercar status. The Monster 1LR-GUE is the main reason the LF-A is any good. It revs too fast for analog rpm gauge and has a nasty torque/powerband. nice, except its twice as much as other cars in its performance level. Nice try Lexus, but they are still too new to be a serious contender