On 8/18/2015 6:04 PM, keith_A_Lang@xxxxxxxxx [Chrysler300] wrote: > Fern > I paid $700 for a 3.91 ratio 8 3/4 489 case Sure Grip about a year > ago and it was what I would consider a good deal at that time, since > I saw plenty of prices higher than that for Sure Grip 3rd members > while I was looking (boy times have changed.) Be careful as to the > casting #: The 742 and 489 are the ones you want, and the 742 would > be more appropriate for a letter car since they were the ones that > would have been originally installed on a Letter Car (at least the > later ones.) The other thing is that the 742 case is more easily > rebuilt than the 489. > You will see sometimes 741 case Sure grips on Craigslist, et al but > those are small pinion rears and not what you want for your Letter > Car, IMHO. > Keith Its been said that any Mopar 8-3/4" is usually stronger then the Gm units of the same time frame. And plenty strong compared to the Ford 9". http://www.moparfins.com/Repairs/8-3-4_Rebuilding/Information_on_Mopar_Rears.htm Now, It is possible to install a later center section in the old tapered axle applications, its been done before. Just find a good shop! -- Paul Holmgren If you think Space is the Final Frontier, You should see my Garage! ------------------------------------ Posted by: paul <paulholm@xxxxxxxxxxxxx> ------------------------------------ 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 https://groups.yahoo.com/neo/groups/all/manage/edit 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#querylang ------------------------------------ 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: https://info.yahoo.com/legal/us/yahoo/utos/terms/