I was referring (and thought you were) to the stl files that I sent you. I'm not sure how you could use the R Factor files. What format are they?
Send me an email address. I can send the raw .stl files that I created. The scan data is actually from a 1/69 die cast model that I scanned. It will take some effort to create a model suitable for CFD work. I had done this already but a hard drive failure ended that progress:sigh: