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I got up and while coffee heated up, I walked out and grabbed some numbers. Measuring my Penda bed liner inside and adding back for thickness of the plastic, as best as I can tell the Penda's front wall is very near 17" tall. Measure in your truck on top of ribs, should give a fair idea of how far up the Pendaliner 83001SRX will cover, the two sides are taller, so they will catch under the bed rail lips, no question. Those two holes are about 1-3/4" below that top edge, 18" apart. If drilling, I'd wait until the liner is in place. Between the two screws and the two sides, the front wall will likely fit really nice across the front.
Hope it helps in your decision.
I think it was77&79F250 whom posted he had used some of these already, so maybe he'll post a pic or two?
06-15-22 I Visited truck today, thought of this thread, so measured my bed's front wall to first bend .... 17" is right!
OK, here you go, the 83001SRX Pendaliner in my '77 F-150 long bed PU. I have not yet mounted the tailgate cover, but it fits great and this bed liner fit so close to the OEM bed insides that just the thickness of my reinforcements crowded it, so I trimmed it. I tempoapily removed the tie down U-bolts, gonna fab thin covers to cover the edges / gaps from bed liner to re-inforcements today. Looking down from the porch, it rained last night. It came with tailgate panel that also protects top of tailgate, but I haven't yet put it on. Uses screws. It all has a non slip like feek. It's OK, I had to notch the first one years ago for the same reason. After notching, it lays nicely. I have a real bumper, but it's awaiting paint too. Front does come up to the bend. I haven't yet screwed it down though, might use nut inserts and some shouldered 1/4" ss hardware. I think was here someone mentioned doing that. Maybe 1/4-20 button headed socket screws and short spacers to not pinch the bed liner, coat threads with never sieze, snug them. Might can reach with a wrench (piece of paper to wedge nut in wrench securely) and apply a lock nut on cab side of front wall, just skip the threaded inserts. All in stainless natch'.
Between some showers and dust, the bed liner could use a wash now. Later after posting, I put the polished stainless tail gate top guard (bought 20 yeas ago anyway) and Pendaliner tail gate cover on, I taped inside the stainless, then used some straps to pull it tight onto tail gate, then followed with tail gate inner liner that also sits over top. I had extra screws, added 4 extra holes along lower edge and a extra dead center of top. Those screws self tap, the shoulder goes through a 5/16" hole in plastic.
That looks great. I am a big fan of the nut-serts (I refer to them as rivnuts); they are really clean, easy to replace and are convenient.
Thank you, and Yes, I've used them often in 1/4-20 thread , just not long ago bought 100. I use a bolt and a nut and greased washers to set them in a snug hole.
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