Carlton and All: All 300Hs were undercoated. I am quite sure, judging by my original, and others, that this was applied AFTER the exhaust system was in place, due to the "shadowing" pattern on the underbody. Same thing on my 300F. The fuel tank was also installed and undercoating covered it as well. The 300H, like all unit body cars was sent thru a dip tank prior to spray on primer and painting. Usually the dip prime covered the upper part of the front of the fenders as the car entered, and up into the upper rear quarters as it exited. I would think the dip prime at the dashpanel ("firewall") area would probably be around a foot and one-half or so from the bottom, but would be covered with the color coat at any rate. There will be a line at that level seen when the fender is removed. This primer was a water based product and was rinsed off the outer body immediately after the dip tank to avoid having to sand out the baked paint edge later---and to save primer, too. 300ly, gil C. In a message dated 8/12/2010 12:53:51 P.M. Eastern Daylight Time, schroe99@xxxxxxxxxxxx writes: Hello, Could someone describe how the bottom finish of the H's came from the factory. I'm hard at work sand-blasting and repairing and what I see looks like blue paint with spray-on black undercoating on a lot of the bottom. I think much of the undercoating may have worn off from road gravel or sand because the areas where it remains are more protected, such as above the rear axle and in the driveshaft tunnel. I imagine that blue paint was the rust proofing paint the body was dipped in. How far up did the dip cover the firewall? The most surface rust I've encountered was the underside of the roof and the underside of the rear shelf. Those areas looked like bare metal. Thanks, Carlton Schroeder Eagle River, WI [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: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links [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: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! 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/