Easy-to-get and affordable exhausts are the close-fitting shorties like these from Sanderson Headers. Paint 'em VHT white for the period look. | 
Chevy trucks need love, too. Here's a beautifully detailed-with-paint example of a breathed-on 409 that looks "real fine." | 
If you're doing over a '60s Impala, the W motors are just as good a candidate for thinking "outside the crate" as a trad rod. This is the 348 in Rich Zavarella's '60 Imp. Check the beautiful Moon finned valve covers. |
If more is good, too much is just enough for some! By sight and by sound, a blower really adds to any engine, but they are rare today on W motors. Note the firewall clearances made for the blower and the engine itself in this Deuce, since the wide blower drive up front means the engine must be set farther back. | 
Edelbrock's Performer RPM dual-quad large-port manifold (PN 5408) in its as-cast presentation also comes in an EnduraShine finish. | 
Edelbrock has also come out with Performer RPM (PN 60819) heads for the 409 that will work with stock or aftermarket intakes. |
Classic Series 409 valve covers (PN 4140, 41403) come in black powdercoat finish (shown) and as-cast. | 
Edelbrock also has air cleaners in both single and dual-four configuration; the Classic Series dual-quad air cleaner (PN 41193; PN 4119 polished) is shown here in its black powdercoat finish. | 
A good variety of ignitions is out there for the W motors, including real magnetos from Joe Hunt. These examples are the look-alike versions with powerful HEI electronics crammed inside a regular Hunt mag case. The foreground example is a SBC, just to illustrate the shorter length of the 348-409 models (rear in photo). |
This is a Victor Series billet mechancial aluminum fuel pump (PN 17000) you may have seen on your small-block Chevy, but it will also work on a 409. |  | |