Originally Posted by Tomlowe523
If I get an aluminum seat from Kirkey or something could I weld blocks on to the back of the seats then drill and tap them, then bolt the belts to the seat?
Having the belts anchored to the seat is not legal. The best way would be to have them anchored to the required cross bar. This from the NHRA rule book: "Sidebar must be included on driver's side and must pass the driver at a point midway between the shoulder and elbow. Swing-out sidebar permitted. All roll bars must have in thier construction a cross bar for seat bracing and as the shoulder harness attachement point; cross bar must be installed no more than 4 inches below, and not above, the drivers shoulders or to the side bar." There are more regs on bracing etc, so I suggest that you get a rule book and look up 4:10 ROLL BAR on page 261.