The Maruti Baleno can be converted from Sigma to Alpha but the total cost would be more than the actual price of the Alpha variant. You can buy the Sigma variant and get it equipped with aftermarket accessories for an affordable option. All you will need is a touchscreen system with navigation, aftermarket but approved projector headlamps, alloy wheels, reverse parking camera with sensors and a bit more of investment on power windows. It better to go for Delta variant as it comes with a better instrument console, nice music system, all power windows, reverse parking sensors and automatic AC also.