Forza - heavyweight cars?

[nick francis]

I'm not a serious gamer but have been playing Forza for a little while. I've got gold trophies in many of the series and have dozens of cars both won and bought. Thers one challenge I cant do because I dont have a heavyweight car though. I'm too idle to search through the various dealers and hope somebody can just tell me what I need to buy to complete this challenge.
TAI

[EK993]

Ferrari 612, Bentley, Aston, most American cars...

[Tycho]

RS4 with all the trick parts?

[GravelBen]

Forza 1 or 2? Forza 1 I think I used either a well-modified RS6 or a fully stripped out Merc CL65AMG.

[Digby]

Think i used the RS6, but the Bentley is great tuned up too.

[twin40s]

RS4 isn't heavy enough.

I used a tweaked RS6,

you can then use it for the audi manufacturer race, and the v8 race

[Muz_Wez]

I'll have a look tonight, but I think I used a Ferrari that I modified in as many ways as possible to improve performance & handling etc. however always with an eye on it's weight. It worked bloody well.

I'll drop a full reply on later to confirm what model / mods etc....