Welcome bljohns69! Congrats on your new Sunny!
On the stabilizers, which is what I think you mean, when you said the 5 ft long bolt came out, I'm assuming this is the all threaded rod that goes between the 2 folding ends of the scissors stabilizers? I know, we all use different words to try and explain these things.
Stabilizers are an option on a Sunline. Not all had them, at least from Sunline. If the camper was ordered from Sunline by the original selling dealer with stabilizers added to it, Sunline used different styles/brands pending the weight and size of the camper. If they were not ordered with the camper by the dealer, then either the dealer might have installed some brand the customer requested or it was sold without any and a prior owner installed some brand.
We can help better to know the model of your 99 Sunline, if you know the brand of the stabilizer and the ideal thing, post a pic of what yours looks like and we can see what you are seeing.
We can then help better to know what you have, the condition it is in and how/where to get parts and or replace.
Here are some of the types Sunline provided over the years. This is a all in one unit on a 2004 T1950 that the entire stabilizer frame has 2 pad feet. One unit at the front and one at the back. This type was on apprx 5,000# GVWR campers. The stabilizer threaded rod is about 6 ft long and the frame of it spans the width of the camper.
Here is the whole stabilizer unit off the camper during some restoration work
These are what we call, scissors stabilizers. They are individual stabilizers, most times 4 of them, one on each corner of the camper. The threaded rod is about 2 to 2 1/2 feet. This type was on 7,000# to 10,000# GVWR campers and larger, except large 5th wheels. This type was made by BAL.
BAL is a good quality brand that Sunline used a lot of on the stabilizers. These guys https://norcoind.com/bal/index.shtml
Heads up, today there is a lot of junk, thin, dirt cheap stabilizers for sale. If you go to buy some, ask before buying in case one of our members had some of the junk ones not worth the money.
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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