When I got a DFP (old one) for GT4. My first race cockpit was my office chair and ATLAS book that had a HARD COVER. Playing on my knees really sucked, but it was playable. Year or two later I got a G25. For that I build Small desc that my office hair would fit under neath it, and had space for the shifter... It was not build solid, and always sway from side to side. Then I got Pleayseats Evo chair, worth every damn penny! so if you will not build a solid cockpit, buy one! worth every penny, as well it looks sooo sleek, and really comfortable.