Convert existing Angular project to MEAN

I have an Angular Theme project which runs fine. I want to start using MongoDB with it and thought of making it a MEAN project.

I installed Gulp and Bower and mean-cli to it but I don't know how to run or know if its now integrated.

When I run node server command it throws error

module.js:327 throw err; ^

Error: Cannot find module '/Users/gulamabbassethjiwala/SMST/server' at Function.Module._resolveFilename (module.js:325:15) at Function.Module._load (module.js:276:25) at Function.Module.runMain (module.js:429:10) at startup (node.js:139:18) at node.js:999:3

Should I create a new blank MEAN project and then add this Angular to it?