Main reason, it's a slippery track---going to take a long bar and good shocks to make it a consistent car. Reinforced stock bars or aftermarket lowers work great on a good track with some Thundertrack sprayed out a couple hundred feet or so, but slippery tracks take a bit of help to get a consistent bite. Many years ago I ran a '67 GTO on a similar slippery track, long bars and light rebound shocks worked great.