Here are some useful links and files for RSR, Mugen, etc:
RSR Dirt Sim: https://rsrdirtsim.webs.com/
My main RSR Site. Has mostly Sim Racing stuff, but also some of my old Mugen stuff, and my MDickie Pro Wrestling and Boxing/Kickboxing mods.
Mugen Archive: mugenarchive.com/
Lots of old and new Mugen stuff here. You can find Mugen 1.1 beta and Fighter Factory 3, which I use, on this site.
Mugen Projectile Tutorial: www.angelfire.com/ego/heavens/mugen_Fireballs.htm
How to make your character do a hadouken, I used this because KFM doesn't have one.
DAZ 3D: www.daz3d.com/
What I use to create my characters.
Daveybird's Pack 2017: www.mediafire.com/file/dobp4gyzugbpcpt/Daveybird%2527s_Pack_2017.zip/file
It has a bunch of my 3D heads, models, ripped heads, accessories, backgrounds, etc that I use for DAZ. A 2018 edition is coming with more stuff!!