I know the RV-4 and RV-6(A) both have an offset to the engine. (Offset from centerline of the fuselage.) Yes it is noticeable but it has been over 20-years since I was working on the cowl of my RV-6 and do not remember. They say the mind is the 2nd thing to go and I cannot remember the 1st.
Gary A. Sobek
KVVS RV-6 Flying
Building RV-8 S/N: 80012
To most people, the sky is the limit.
To those who love aviation, the sky is home.