Has anybody done this before?

I have a '73 Duster with a 318. I'm putting 340 stripes on it because I think there really cool. I went to my local dealership today and in the Service/Parts section, they had a 340-4bbl pie pan for sale (brand new) and it was 20% off. I'm thinking about getting it. So my question is...has anybody ever dressed up their engine to look like something else and do you guys think it's wrong?
Have you ever heard the saying ?:Drive it like you own it :You bought it ,so do what you want with it.Improving the motor to a 340 is a great idea,and if that,s what you want go for it!#,s matching cars with correct everything are mostly for shows,which is great,but I like to DRIVE my cars cause I work on them all the time and appreaciate them more.My 2 cents.