could we please not jack threads because PSO says dumb crap? i mean even though paint is going to chip off when the plastic expands and contracts, and the paint will add weight.......well yes it is a dumb idea. but leave him alone.
big-al PSO is a crazy aussie with no money, you wont think that way unless you move to australia and leave all your money behind.
aluminum really isnt worth it so i wouldnt bother if i were you. invest in an exaust and some drivetrain upgrade's (heavy duy drive cups, 3-speed). keep the F4.1 till it dies.