Been a few months . I mothballed my 86 olds due to moving. Starting tomarrow i am removing the interior to weld the roof and a few tiny patches. Transmission is still missing reverse. It's a plain Jane 307 with 5 a heads hooked up to a 200r4. On good days it's ok. No race car no dog either. But the trans I could get to 30 mph , stop , get out, Jack it up, manually shift the linkage into the next gear, drop it down , get in and be faster than it will shift on its own. Sure it's because it's tired? Kick down literally half of "free bird" Is done playing. This thing Absolutely sucks!! Noticed tons of shift kits. Will this fix the slushbox? If it's a natural trait for sluggish shifts in not even going to bother keeping it. Recommend any brands? Figure id fix the rust. Rebuild the trans. Will almost be a daily driver besides a shotty starter and a carb needing rebuilt.