The polyethylene valance is a much simpler installation than the steel. The only problem can be if the sheet metal style threaded screws used to go into the cut out areas under the nose (as pictured above) have been stripped oversize. Then you have to use some stamped steel nuts to allow the screw threads to engage into.
The lower bolts that go to the underside of the rad support used vary large flat washers to spread the load. They insert into caged nuts that slip onto the underside of the rad support and the lower fender edges. NEVER tighten them more than finger tight (and use Loctite on the threads) - this allows the valance to move fore and aft when the nose of the car moves. If you have ever put a floor jack under the subframe behind the front tires and jacked the car up, you will see how much that urethane nose can deflect away from the fender edges. That is what originally caused these valances to shatter (along with the rad support mounting holes being about an inch off).
There is also a very small center support bracket that Norwood reproduces, that goes under the hood latch support beam at the bottom.
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