The missing element of the arrangement – a third Racing Entitlements Contract – was purchased by Triple Eight last week at the completion of a tender process.
The deal will see Van Gisbergen finally go head-to-head with two of the category's all-time greats in equal equipment following three years with Triple Eight customer squad Tekno Autosports.
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Whincup has had the edge over team-mate Lowndes for much of their time together at Triple Eight, scoring six championships in the last seven years.
Van Gisbergen in fact proved Whincup's greatest challenger in 2014, finishing second in the championship with Tekno.
The 40-year-old Lowndes continues to prove a title contender, however, and again finds himself ahead of his younger combatants during the early stages of 2015.