I actually don't mind the look of the first gen 7000s.
Although not 100% FIA accurate, the rear fenders are bit more pronounced and the whole car looks wider, lower and more aggressive. I believe they started with a 427 S/C and added 289 FIA features to it.
Here's a first gen 7000 driving around Monaco:
https://www.youtube.com/watch?v=LRpGIODu5n4
Cheers