There are lots of exploded drawings of Winchester Model 74s on Google images but if you are looking for an exact tracing to use as an engraving pattern, I think you will have to make your own. I have never heard of anyone engraving a Model 74. https://www.gunpartscorp.com/Pub/schematic/Winchester_74_schem.jpg
For those who don't know what a Model 74 looks like see below.