i finished installing my new fmic yesterday. if you're not too handy with tools and dont have the proper ones then i strongly suggest you get it fitted by a workshop
hardest part for me was to guesstimate where the whole was to be made (the 1 under the battery tray) i did sort of make a mess of it, but for a first non return flow kit install i think i did a good job
also i will say that if your too "careful" with your car, as in you dont want to cut bits off etc then dont do it yourself