LE front spoiler

[Calvin Krug <ckrug@laf.cioe.com>]

I purchased a new front spoiler of the type fitted to the '80 LE models,
and I'm wondering what the best method to attach it to the front valance
would be.  I could either drill pilot holes, and self-tapping screws, or
possibly some high quality double sided tape.  How were they originally
fitted?  I'm afraid of the tape method coming unstuck over time, and the
screws might crack the plastic unless I fit a large washer under the head.

Calvin Krug