If it is mostly a street driver I would go with the Performer.....the Air Gap is an updated version of the R4B....and does not work well in cool weather no heat crossover...the R4B is a good manifold and works year a round.....I have one on the 360 in my AMX and I have a Performer on the 360 in my Jeep GW....I like them both....have not tried the Air Gap yet..... Jim moparmaniac440@xxxxxxx wrote: > I have a relatively stock 401 (internals stock - some bolt on mods).? Which is the best intake to use?? _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list