yes. very easily.
hell. Ill do it for you... give me 5 min.
edit: what version? diplomacy i assume?
edit edit: http://www.mediafire.com/?qeaqn28g2cbiks6 thisll work if your using entrench or diplo. just unzip it in your mod folder.... C:\Users\<insert user name here>\AppData\Local\Ironclad Games\Sins of a Solar Empire\<insert mod folder for your version here>
you can then open in it up and fiddle with the damages to your hearts content. It will have advent particle effects, and will use the pulse gun upgrades, instead of phase missles.
Using this, you should be albe to figure out how to mod preeety much anything.... just, search on the forums for harpo9999 mod tools... or reference files. and party.