Headlight Relay Kits

I ordered a kit from my local dealership a month ago and it finally came in this past friday.
Upon opening the box there was a Dear Customer letter inside. It seems they substituted a Halogen Semi Sealed beam headlamp unit in place of a Sealed Beam headlight unit [Halogen?].
It also indicated in the instructions that the Halogen lamp will be very hot when turned on or just been turned off.

Should I be concerned on the headlight being switched from sealed to Halogen semi sealed? [heat generated]
No mention if the original sealed beam was Halogen.

Also, would there be an issue with the heat when installed in a 1970 Dart Swinger with the plastic headlight grille surround?

Thanks
It looks like a decent kit for the price. [$30.00]

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No worries on the lights getting hot enough to damage the plastic grill. I would check the wire gauge to the relay power (30) and the out to the lights (87). Should be 12ga and then the bulb ground should be 10ga. This will ensure good bright lights that are trouble free. The ground is part of the circuit and must not have resistance.