It should be legal .
Now blueprinting is another thing .
As is checking every little thing that could possibly be out of spec .
Get a rulebook and check what you have the skills to check .
Run it and when you win the tech person will let you know what not right .
There are many things on engines that have a no-go labeled to them . Tech's have tools to check these . No-go means it has a maximum size allowed , the measuring tool for that particular piece must not be able to go into or thru whatever is being checked . A Must-Go is a minimum measurement , meaning the Tech's measurement tool must be able to go into or thru said part or object being measured .