I'm not sure what he is doing but his car won't pass the rules for a Hobby Stock car at most tracks.....this is the rule from IMCA for Hobby Stocks which most tracks use so there is consistency between tracks which make it easier for invitational races
5. BODY: All bodies must be unaltered OEM, or OEM replacement, in OEM location and match frame. Front body mounts must be visible. Sunroofs and T-tops must be enclosed. OEM
appearing aftermarket plastic nosepiece allowed (must match body on GM metric car). OEM appearing aftermarket plastic tailpiece allowed (recommended to match body). Tailpiece must be
trimmed for unaltered trunk lid. No metal fabricated rear tailpieces allowed. No spoilers, hood scoops, ground effects or skirting altering OEM appearance allowed. OEM STEEL hood only,
maximum three inch bow, hood may be gutted. OEM STEEL unaltered trunk lid only, no gutting. Hood and trunk must be securely fastened and back of hood must be sealed off from driver
compartment with metal. Hood must be separate from fenders. Front and rear inner wheel wells may be removed. Trunk floor directly over rear end housing must be removed. Trunk floor
may be replaced, frame rail to frame rail, with 0.049 inch thick steel, must be located on top of frame rail. Overlapping of body panels permitted. All glass must be removed, all windows in
body must remain open; maximum seven inch metal sun visor allowed across top of windshield opening. All doors must be securely fastened. Fenders and quarter panels may be trimmed for
tire clearance, ONLY. Car number must be minimum four inches thick and 20 inches tall and clearly visible, on both sides and roof of car; six inches tall on front and rear. No Station Wagons,
Camaros, Firebirds, or Mustangs.