To elaborate a bit further. The original 4 bolt manifolds used on cars were I believe "modified" in that one area was cut out and replaced with a flat section to allow clearance on the driver's side. Former club member, Wayne Graefen, who I personally consider a very learned person on the '57 examples had some repro units made and sold them out rapidly. He is not doing this project any more and has no plans to do so. Sanderson Headers offers, or at least did a few years ago a "shorty" version of a tube header that will fit the '57-'58 application as well as street rods. Once again you will have to dimple the pipes on the driver's side for clearance. Here is their offering: http://www.sandersonheaders.com/Sanderson-DD3-Chrysler-331-392-Early-Hemi-Big-Block-Header-Set.html Some years ago I purchased a set of these to install on our 300C but after serious thought I decided not to do so. They are still in the box unopened and stored in my collection of parts. John Lazenby From: Larry Jabin <larry@xxxxxxxxxx> To: "Chrysler300@xxxxxxxxxxxxxxx" <Chrysler300@xxxxxxxxxxxxxxx> Sent: Monday, July 30, 2012 1:18 PM Subject: [Chrysler300] Exhaust manifolds 300D Could someone tell me if all the 1958 300Ds came with the Exhaust manifolds with the 4 bolt exhaust flange I think some people call these truck manifolds Also if someone knows what all the differences are besides the 4 bolts The reason I ask is Hotheads is now having these reproduced see link below http://www.hothemiheads.com/headers_related/cast-hemi-headers.html Thanks Larry Jabin mailto:Larry%40pwbsfo.com<mailto:mailto:L.jabin1007%40pwbsfo.com> [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/