ok well that was my original idea was to put a 4.6 into the 68 just going through engine options.But found out the 4.6 is wider than any fe big block and its about the same size as a 429 now it weighs in at over 600 pounds.Shock towers would have to go a mustang 2 suspension would then have to fabed in and there was also a problem with the turning radius of the wheels since the bottom of the block is so damn wide the wheels would slap against it when turning.Now the 5.4 motor doesnt sound bad at all i havnet done that much research about them because of the cost of the motor.now i think it would be one hell of an experience to chop the the towers take them and add the mustang 2 susp. and put a 4.6 into it but since i'm just starting out with hardly any cash i'll propably just end putting a hot 5.0 cobra with aod in it and call it cause i have future projects for more mustangs like building a replica scca 67-68 cars and building a 68 bullit fastback or building a nostalic mid 60's mustang funny car with the firewall pushed back and to have that whole g force thing going on.What can i say i'm mustang freak [img]/phpBB/images/smiles/icon_biggrin.gif[/img]