In 1973 Leonard would return to Vel's Parnelli Jones, driving the #1 Samsonite Parnelli VPJ-2-Offenhauser.
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Of their three cars in 1973 only Andretti in 5th place would make the top 10, they alost their Samsonite sponsorship at the end of the year and Firestone (Vel's Parnelli Jones tire supplier since in the USAC National Championship since their debut in 1967) was cutting back their racing funding before pulling out completely at the end of the year.