Jonathan Williams, 1969 Monza Lotteria

Running in low downforce trim to maximise top speed along Monza's epic straights, Williams qualified 15th but was running with the leading pack when a broken injection trumpet forced a pit stop just five laps from the chequered flag. Losing two laps, he rejoined to finish and eventually placed ninth. Williams drove chassis 001 again three weeks later at the Tulln-Langenlebarn airfield circuit in Austria for Round 6 of the European Formula 2 Championship. This time equipped with front and rear wings, wider wheels and a re-profiled cockpit surround, the 103 certainly looked like a serious contender. Williams started Heat I from 17th and last after having missed timed qualifying, the team failing to take a spare upright and being forced to sit the session out after just such piece broke harmlessly in practice. Another was flown in specially from Italy and JW went on to finish Heat I in 12th position and Heat II in 10th. Testing at Modena resumed in early August with racing legend Jacky Ickx trying chassis 001 for size. He agreed to drive it later in the month for Round 7 of the Championship, Lake Pergusa's Gran Premio del Mediterraneo. Starting from an impressive fifth on the grid, Ickx ran fourth for much of the race, only to retire on the penultimate lap.

Piers Courage, 1969 Roma GP

Despite having been extremely cramped in the tiny cockpit, Courage put in a fabulous qualifying performance to start the race from second. He went on to be the only driver to seriously challenge Matra's Johnny Servoz-Gavin in the race, but having run second for the opening 30 laps, Courage found neutral instead of second whilst exiting the hairpin and span, allowing the Winkelmann Lotus 59B's of Jochen Rindt and John Miles through. The Courage Brewery heir was able to recover one of the dropped positions and eventually finished a fine third from where he would start the second heat. Rising once again to second position, a repeat performance wasn't to be when pick-up problems began to starve the engine of revs, the Englishman retiring on lap six with a faulty distributor. That would be the end as far as 001's works racing career was concerned, but De Tomaso might still have had hopes of selling customer 103's for 1970. Several drivers had already expressed an interest in running De Tomaso's that year, Henri Pescarolo, Nanni Galli and Spartaco Dini having been among them.

Spartaco Dini, 1971 GP Ciudad de Bogota

But Dini, a works Alfa driver and European Touring Car Champion of 1968, would soon after be ruled out of racing for the rest of the year. While unoffically testing for the annual Mugello road race in June, Dini was involved in a fatal road accident that saw his national competition license revoked for 12 months. The Italian was able to race internationally with a Spanish license six months later and entered 001 under the banner of Scuderia Brescia Corse for 1971's Gran Premio Republica de Colombia and the Gran Premio Ciudad de Bogota, both of which were held in February. However, neither event was a great success and on returning to Europe, the car was prepared by Racing Team IRIS who ran Tecno's in 1971 for the likes of Arturo Merzario and Claudio Francisci. Dini's next outings came at Vallelunga's Gran Premio Madunina and the Gran Premio della Lotteria di Monza, but he failed to qualify on either occasion. For the Tipo 103's final period appearance, Dini did manage to make the grid, but a disappointing run at the Gran Premio Citta di Imola saw him complete just over half of the allotted 28-laps in Heat I and finish Heat II some five laps adrift.