Ok, I just thought only the RB and late Hemi engines had that flat top pad, near the base of the dist, and the B engines had more of a sloping cavity. Thanks, Brad Bill ----- Original Message ----- From: "Brad Hogg" <roadhogg@xxxxxxx> To: <mailing-list@xxxxxxxxxxxxxxxx> Sent: Sunday, May 02, 2004 8:34 PM Subject: Re: IML: 400 vs 440 > The "pad" on a 400 is near the distributor...a nice, easy place to locate > it.