I always loved the Kookie car, to me it was the perfect street rod and had a unique look. I would jump all over a model of the car today. The car was built and owned by Norm Grabowski, an actor that had parts in movies and TV shows. Very likable guy. The Kookie car was "the ginchiest"!
As for the Cheetah, although a cool little car, it was a total failure at it's intended purpose as a road race car. If someone wants one there are resin alternatives available. I'd much rather see a kit of the Chaparral 2D or 2E again and a kit of the Cobra Daytona Coupe. They were both very successful cars and the couple of kits available were not that good, the Gunze-Sangyo Daytona Coupe was curbside and difficult to build. Mine came with broken white metal rear suspension parts, from the factory. The Chaparral kit was an IMC that was decent but fiddly and it was the winged 2E.
The real car used on Starsky and Hutch was a 6-cylinder car, the 1:1 street car was not very popular back in the day. There are resin bodies to build this car, I think they are still available.
What irks me is some of the kits that we have had produced. The Munstermobile, the Monkeemobile and many others. That tooling money could have been better spent on some of the other cool subjects that have never been close to kitted.
Are you sure the real Starsky and Hutch car was a six? About that time in the mid-70's, I thought Ford quit offering sixs in Torinos for a couple of years. I may be wrong on that.
As far as the Munstermobile and Monkeemobile. There were a lot of us who liked those shows and the special cars that appeared on them. As a kid, I build both the Munstermobile (plus Grandpa's Dragster) and the Monkeemobile. I have a more recent Monkeemobile release I hope to get to some day. And from time to time, I still think about picking up another Munstermobile and Grandpa's Dragster. I'm glad they tooled all three.
The Kookie car, Cheetah, and the Chaparrals would all be nice. The Chaparrals remind me, I'd like to see some nice 1960's Ford GT40s. IMC did several, Chaparrals and GT40s. But, from what I've seen and heard, none were easy to build.