How can I add a second body to the 89 pessima? [SOLVED]

I want it to be a selectable part.

Thanks.

 

Without overwriting quite a bit of the existing JBeam, you can't.

With overwriting, yeah it can be done, but its liable to be broken by every single update...


You might want to take a look at D-Troxx's 200bx mod, he overwrote parts of the JBeam to allow a selectable body

 

Thanks for your help.