I am 6'3" 250, my car is 23.5" Fits me well, I have seen Greg M in his fed and he fits, I have also drove a 19.5" fed for a few years with no problems. Every car is different. I am wide at the shoulders and tall so it was difficult to get a fed that I was comfy in. Like Greg M said suit up and check it out. I am doing a pour in seat to keep my butt from moving around was my only concern with the big driver's area. Once you make a hit it does not matter if you are shoe horned in or not, You will be hooked...Greg S.
