(rominl's gonna love this one!)
Honestly I was just thinking about that because, they just put the GS300 engine in the IS when it first came out. Also I was thinking that the V6 and V8 had to be pretty similar to fit into the same GS. So why not do that on the IS also?
Well I'm glad to see that it is possible, although the paint scheme is absolutely horrible.
But the numbers that car could put up would probabbly be faster than the GS430's 0-60 in 5.8, so pretty quick. So that I like.