In preparation for 1969's F2 campaign, De Tomaso bought a new Tecno 68 that Gianpaolo Dallara modified for the 1968 Temporada Championship. Held in Argentina that December, there would be no shortage of first-rate cars present, the Ferrari and Matra factories bringing their 166 Dino's and MS7's. Lotus, Brabham and Tecno would also be battling it out for supremacy, many of the drivers like Rindt, Regazzoni, Pescarolo, Reutemann, Siffert and Rodriguez going on to become Grand Prix stars in the seventies.
   

Consisting of four races held on consecutive weekends, the first and last events were staged at the Buenos Aires Autodrome with rounds at Cordoba and San Juan in between. Jonathan Williams would drive the Tecno-De Tomaso and takes up the story. “I love Argentina. The Temporada series was just one long party. The Buenos Aires track was super, in a beautiful park. Crowd protection, zero. San Juan was also an excellent track, but very hot. Cordoba was bad news, a very bumpy street circuit.” Dallara had equipped the Tecno (chassis TOO298) with wide track suspension and had a new high downforce nose fabricated by Carrozzeria Sport Cars of Modena. The weekly Italian magazine Autosprint also claimed it was lightened and produced more power than standard thanks to modified heads.

“I remember there was wide track suspension and the downforce nose. Unfortunately, there wasn't any increase on the rear of the car. If the engine had any more power, they never told me about it. I believe the car was bought new, bog standard, from Tecno. I don’t think that anything broke in the first race at Buenos Aires. We had two problems, one, the new aerodynamics were not helping the car's driveability and, two, the Tecno handled like nothing I had ever encountered, and I didn't like it one bit.” After failing to finish in the first race, Williams placed 11th at Cordoba and 14th around the streets of San Juan.

“I only got the hang of it by the last race, by which time the car had been re-converted back to the standard model. We were able to do this because team manager Nello Ugolini was understanding about my difficulties, and we had brought all the original bits out with us. Something clicked and I could drive the thing fast. I believe at the time the engine blew up I was running fourth, just behind Rindt, Siffert and Regga. Afterwards I think it came back to Italy and we kept the engine for the 1969 car.” Williams subsequently went on to do the bulk of development for De Tomaso’s 1969 Formula 2 programme, racing the new Tipo 103 at Monza and Tulln-Langenlebarn.
 

The Tecno 68 as modified by Dallara for the 1968 Temporada Championship in Argentina