Timothe Buret and Will Owen have been confirmed for the 2016 edition of the New Zealand-based Toyota Racing Series.
Buret and Owen were teammates at Juncos Racing in Pro Mazda this year, but will be representing different teams in TRS - Owen joining Giles and Buret lining up for ETEC.
20-year-old Frenchman Buret entered the Mazda Road to Indy scene in 2015, finishing fifth in Pro Mazda and picking up a maiden win in Indianapolis.
American racer Owen, also 20, was two spots behind and had previously been a race winner in USF2000 - also in Indianapolis.
Road to Indy was most recently represented in TRS by Neil Alberico, who finished 15th in 2014.