Ever heard of a 'MUSCLE HUSTLE' package?

I can remember seeing a display of Hustle parts at a dealer in 1969 when at Allentown Chrysler Plymouth. I was there with a freind. He was buying a left over Green 68 Hemi RR. They left him bolt his slicks on from a 63 427 ford to take it for a ride.

Those were the days I was 14 years old. Got my first 69 Coronet R/T in late 1972 at age 17. Owned several since. my favorate Mopar . also owned seveal RR's and Chargers, GTX's. One Bee. and the list just kept going. But I also had several different Brand X muscle cars. Farts, Chubies, and Indians.