So I bought the trackspec motor louvers and they are recommended to be put on a iroc hood but I have a rs hood and they said that could work how should i go about tackling it, should i remove the hood from the car and cut from the inside where it has the outline or if anyone has put them on a rs hood how did you go about installing them

Check out LsxMatt (on here and on youtube) I believe he had an RS hood and installed these.

Possible with a a grinder and some patience.

you get any measurements of where they should be placed or did you turn the hood upside down and cut from inside there

I used the numbers one of my subscribers gave me.
you can't use the underside as a guide, it's not even close. Since you are using a RS flat hood, you can really put the louvers anywhere you want.