Gender Swap Auto Shop by Connie Lynn Gaz
Twin lipstick lesbian sisters, Teri and Toni Tuscano own a race car that they take turns racing in competitions. Their dad was famous race car driver, Antonio Tuscano and taught the girls about cars at a young age. They have a mechanic/manager/promoter named Mario Angeletti who is hot, sexy and really cute. They both have an attraction to him. Only problem is, he’s a man with male genitalia. Big problem!
They have a lab create an additive for their race car that gives them a competitive edge, but it does a lot more than that. They have fun using the chemical to their benefit in more ways than one.