With back-of-the-grid Jordan, the 28-year-old has demonstrated skill and - perhaps most vitally - consistently dominant pace over Portuguese teammate Tiago Monteiro.
"I am faster than him nine times out of ten," Narain claimed.
He told the Times of India newspaper in Monte Carlo: "I've already impressed a lot of people.
"I'm going to be here next year too, with Jordan or some other team. I'm very sure of that."
He admitted to more than one approach of a rival team chief.
"Yes," Karthikeyan responded, "but I am not going to say who."
However, if Jordan is the most realistic choice for 2006, he reported no concern at reports that team owner Alex Shnaider is keen to install a Russian born driver.
Karthikeyan insisted: "It will take a minimum of five years for a Russian to come in."