Shift kits.. do you really need one????

Very interesting read guys! I have freshened a few flite's in my early days and installed a B&M shift improver kit in my 73 Challenger years ago. It really worked great. Easy throttle shifts were firm and open throttle shifts always barked 2nd..... I could also manual shift it from 1-2 and let it hang in gear (around 3000 rpm) and bump the Slapstick and bark 2nd. I can also say that the Mopar Slap Stick is the best automatic shifter! tmm