Comprehensive dimensions are given in AMA Specifications for 1957 on the Club's technical page. Print the pages and grab a tape measure. There are some differences between 300C and other models but doesn't mention differences between power and non-power seat. Maybe not all variations are covered. Henry -----Original Message----- From: chrysler-300-club-international@xxxxxxxxxxxxxxxx <chrysler-300-club-international@xxxxxxxxxxxxxxxx> On Behalf Of John Grady Sent: Thursday, 15 May 2025 11:04 PM To: chrysler 300 club <chrysler-300-club-international@xxxxxxxxxxxxxxxx> Subject: {Chrysler 300} Moving seat back in 300C ; seat height hi, all while I did this myself before a few times with great parts made by someone in club(?), it was so long ago only a foggy memory remains, —— but I do remember some floor pans had a depression where seat rail bolts , and some did not , which I believe impacted the parts used to move it back 3-4” . Stock allows only a small amount rearward They must have dropped the seat into the pan looking for more head room? See later on. That depression also prevents just redriling floor as seat-rail hits the back end of it . Big heads up on all this !!!! having done 4-5 C-D , — upholsterers “ do you a favor “ and tend to overstuff the front seat , or the foam is made too thick . There is plenty of leather to do that . This leads to a beautiful leather seat all done that has no room for your legs under the steering wheel , so you get to do it all over again , manually shaving the foam etc I do not know the correct stock dimension of seat height at front (the seat itself , not off floor) but someone may measure an original ? and I’d go and inch less actually if possible . That number and this situation needs to be on our site? This seat height thing may be the real reason for adding depression in floor pan ?they designed the seat too tall , = no room under wheel for legs and had 100’s of them , a large person cannot fit in the car well . Back to real reason for this post , does anyone still have that kit or info ? looking for one right now . Finally finishing up George M ‘s turquoise convert . I really miss George, great guy . He helped all who ask .. He helped me a lot .. Best regards ,and thank you John -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/5F7DD2B5-EBD9-42F6-98A6-65E08FD8CBAA%40gradyresearch.com. -- For archives go to http://www.forwardlook.net/300-archive/search.htm#querylang --- You received this message because you are subscribed to the Google Groups "Chrysler 300 Club International" group. To unsubscribe from this group and stop receiving emails from it, send an email to chrysler-300-club-international+unsubscribe@xxxxxxxxxxxxxxxx. To view this discussion visit https://groups.google.com/d/msgid/chrysler-300-club-international/001a01dbc5a4%248aa30710%249fe91530%24%40optusnet.com.au.