So you're basically after a full front end mate? Dont bother getting the front panel from a scrap yard if you need that, they're cheaper directly from lexus. I paid £163 inc vat and discount from lexus bolton for a full front panel whilst a breakers wanted £250. Theres a few bumpers on ebay at the moment but dont think theres any in plat ice. Theres a black bonnet on ebay but its best to get hold of one with hinges and tbh, you'll be extremely lucky if you found a bonnet in the same colour as ur car as it took me months to find a bonnet. As for the rad, go to discout-cooling.co.uk, they've got an excellent service and decent quality rads at low prices. The brackets that you refer to for the headlights, do you mean the ones that run under the lower edge of the lights? Best bet is to get them from the dealers as well, they aint that expensive either.
Hope that helps mate.