Standard or deluxe? The 38 deluxe is close to the 39 Standard, but the 39 Deluxe is more on the 1940 Ford Coupe.
'38 COUPE BODY SHELL is essentially the same as a '37 COUPE body shell. As said above, '39 COUPE body shells are like '40s. '39 Standard COUPE cowl is different from '39 DeLuxe cowl...DeLuxe cowl is like a '40 cowl. Look at the bodies themselves...trunk and top turret at rear window / trunk transition. Don't look at the front-end sheet metal. DD