Hey guys. Sorry if something similar has been posted but I couldn’t find exactly what I was looking for. This is my first builder and am still learning as I go. I have an ‘81 that originally had a 229. I swapped it with a 350. It’s got a rebuilt TH350. First gear gets me to around 25 mph, second to about 45, and I am redlining at just over 65 mph. I am assuming this is due to not swapping the rear end after upgrading the engine? Looking for recommendations on what rear end ratio I should install. The car is an in town driver, not a track car, so it needs to be good for to and from work and short stints on the highway. Thank you for your help!