Can you customize heist vehicles in gta online?

Grand Theft Auto Online is a multiplayer action‑adventure game set in the fictional state of San Andreas. The game allows players to control a customisable character and to purchase and modify a wide range of vehicles from the in‑game shop. However, the provided information does not mention any feature that permits players to alter the vehicles used specifically for heist missions. Heist vehicles are typically supplied by the game as part of the missions and are not listed as modifiable items. Therefore, based on the evidence at hand, it appears that heist vehicles cannot be customized by players in GTA Online.