Lots of mods to make a Renaultsport reliable on the track?
I must have missed something... I've had my 182 Cup for 12 years now, done many hillclimbs and trackdays over the years, and it's still on the original suspension - last trackday was at 189500km (I am in the process of trying to refresh the suspension, but it managed just fine at the RenoTech trackday in April...).
By all means, go ahead and upgrade parts on your car if you like doing that, and want to, but you don't need to modify an RS to make it reliable on track.