i have a 2019 GMC Yukon XL and I want to put in a suspension kit, either air or electric, to lower the vehicle at least 4 inches. Can anyone tell me if this is possible, without major modifications? I have become disabled and need it lowered for entry. I like the height for driving, but find it too hard to get in and out. I have called a couple of custom shops, but they don't return my call. Any and all feedback will be greatly appreciated.