You realize Audi has dominated P1 (top class) in the LeMans series for several years, with quattro (and turbodiesel)?
And soon after quattro was instroduced, it dominated unlimited class, so it got outlawed. 1982 to 1987 Pike’s Peak.
My initial remark was perhaps poorly stated, that modern vehicles are faster than muscle car era smokey, noisy, rubber burning stuff.
IOW to go really fast, not just special effects.
In the real world, if you are seriously interested in performance vehicles, why not get the real thing?
Pikes peak is not a typical road course.
Audi’s LMP cars are rear-drive. You are correct that they are turbodiesels (except for the R8).