I built my 727 in my 63 with all stock Mopar clutches and plates. And I use the Mopar seal kit also. Since I worked at a Dodge dealer for 24 years and did trans work I have some 727 clutches around and I use them. The only parts in my 727 that are not stock Mopar parts are the rear sprag (overrunning clutch) , the valve body as I use a Turbo Action reverse manual valve body and the converter which is a 9.5 Dynamic unit. Its a street car I race once or twice a year and its been holding up great since 2006. About the only other mod is I blocked the accumulator. Runs in the 10's and has not given me any trouble. Ron