They do sell new corner moldings and the vinyl screw cover strip. Your issue may be the color. White and black are common and more easy to get. If yours is the older tan, you might have to paint with a custom paint made to get that color.
AP Products is an aftermarket company that handles corner modeling as one of the suppliers. They buy it in large qty's and then pack it out in small quantities.
Please take a look here as a start on Amazon. https://www.amazon.com/rv-corner-mol...corner+molding
Or here at RecPro https://www.recpro.com/rv-insert-roof-trim-with-leg/
Other places sell it, too. The costs of this has doubled since 2019 (pre-covid)
Heads up, it seems 92" long is now what fits in many easy shipping situations. They do make it 96" long, but the freight then comes into play. Your camper may be smaller, and the 92" might work.
As for your axle, we would need more info to help better. Do you need the entire axle, springs, brakes, and drums? Or just parts of it?
Here are three places I buy axle parts from. I compare all of them.
Hope this helps
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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