i dont really know which one would be better in this application? Probably V8?'Drive' is jumping to conclusion saying it will be the 2UR engine. 2UR engine is not a mass produced engine for large volumes. IS500 would be in-line with the LS500 sharing the same TT V6 with probably a slightly detuned engine making around 380 - 400 HP. That is what my guess is.