@Janus92 I've made a mod of your parts, and some of my own, namely a smaller astrophage tank and engine, the size of the stock ion engine, to replicate the beetles, I am writing to you to ask for permission to, when finished, post it to spacedock, I will of course give you full credit for making the original parts, I've also changed the descriptions a bit. And I changed the big astrophage tank to a rescale of 1 <- this is from a former post which I accidentally deleted, or at least I think I did.
I've now added a 1.25m tank, but I have given up on community tech tree integration, good news: they won't need any other mods, bad news: it is going to have to be a sandbox mod, because I can't find the parts in the tech tree node I gave them (experimental science). But I'm happy with this mod, it is my first modding project, and also it was a weekend project, I've learned a lot. Thank you for making the original code, I could not have done it otherwise.
by the way, my beetle parts don't have as much deltaV as they should, but I think it's okay.