What to use on my mannequin torso

Hi everyone. Need some help and advice please.

I bought a cheap plastic mannequin torso and I recently decided to cut a hole so I can use it as a sex doll. This was so I found out if I really wanted a torso doll.

It works fine (boobs are a bit uncomfortable but I'll soon replace them with silicone ones) but due to my weight, I noticed that I actually compress the plastic.

So I'd like to know what could I use to fill the mannequin with in order to give it more structure?
Also, is there a way to get or make an insert (even if it's a file) for a fleshlight?

Thanks in advance.

Right, since I didn't get a reply to my question I decided to give it a go at finding out how to solve my issues. First off, the mannequin torso.
Found it on Ebay for £30 so nice and cheap. Also it has D-Cup breasts which really suit it, not too big, not too small.

First, the fleshlight hole. I actually laid on top and found the closest point to the real thing. Though it has closed legs I can say it does feel as natural as can be however, it can feel a bit tight. I made a sock for it made out of thick packaging plastic but a sandwich bag does work well.

Now the boobs. Even though they looked great, the hard plastic did hurt my chest. So I thought of buying a set of fake ones from EBay. I cutted the breasts and left a small lip so I could sit them on top. They are more for cross-dressing but they work well. I bought the bra one so I could clip to the torso but they kept riding up or to the side when laying down.
So I packed the interior with cardboard boxes remembering to feed the bra strap behind them and so far they don't move.
I did take some thinking but I am happy with the result so far.
And yes, I could have bought a TPE torso and not have to do this but can't afford one yet (and yes, I'm being a cheapskate).

Keep inovating everyone!!!

Hi nice job
Perhaps a body stocking to give her a warmer touch

Necessity is the mother of invention!

You could use expanding foam to fill the torso. Its easy to trim off if needed.

Keep an eye on the for sale board here also, good effort, maybe have a look at a Kimberdoll in the future perhaps?

Congratulations for your ingenuity; you have just made your own love doll.