Team USA Scholarship drivers Spencer Pigot and Sean Johnston will test with British Formula 3 team Double R Racing at Pembrey this week.
USF2000 runner-up Pigot, 19, and IMSA Porsche GT3 Cup Challenge champion Johnston, 21, will both drive a National Class Dallara at the South Wales circuit.
Scholarship founder Jeremy Shaw said: "This is an exciting addition to the Team USA Scholarship agenda.
"An F3 car is a 'real' racing car, which produces a massive amount of downforce, and Double R Racing is one of the top exponents in the category.
"I am very grateful to Double R team principal Anthony Hieatt for making this possible for Spencer and Sean, both of whom have displayed tremendous potential and are ready to step up into more potent cars."
Hieatt hopes to strike a deal through British F3 teams association FOTA to make the test an annual event.
"I am very pleased to be involved and looking forward to testing some of the talent brought over by Team USA," said Hieatt.
"We aim, through FOTA, to make this test happen on an annual basis and thus spread the word about the F3 National Class, which employs truly great cars that don't cost the earth to drive."
The Team USA Scholarship has been providing opportunities for rising US stars since 1990 when Jimmy Vasser won the inaugural scholarship.
Subsequent winners include fellow IndyCar Series team owner Bryan Herta, 2004 Indy 500 winner Buddy Rice, current IndyCar drivers Charlie Kimball, J.R Hildebrand and Josef Newgarden, and NASCAR Sprint Cup regular A.J Allmendinger.
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