Getting an engine swap on your P's is considered illegal anyways, but at least with a 4A-GE it says Toyota on the motor and I doubt any cop will be smart enough to realise it's not the stock one when/if they pop the bonnet.
Not to say I'm going to get it done (as much as I'd love to) but does anyone know how much it is to get an F20C put in? From what I've seen floating around on the net it's pretty bloody pricy.