i know this one is a 70's mod for the 75 winston cup seriesI think it's the one here http://bigdonlinemotorsports.com/Downloads.html
Scroll down a bit to NR2003 Mods and Accessories and then the mod is called Hobby Stock Mod
find it tank youIt's a different car set than this?
1975 Winston Cup Carset for BR Hobby Stock Mod
Mod: BullRing :: Hobby Stock Mod Templates: Original - Jerry Lepage Modified - Jack Yaudes Bases: Me Numbers: Me - BER Logos: Me - Google Contigs: Google season.ini Included Rated Cars by me 60 cars, 58 different drivers Hope you enjoy.stunodracing.net
It's the only 1975 set I can find and also the only one listed here https://nr2k3.weebly.com/mods.html