Welcome Rodney. I think you are going to like having the original 235 and drive train in your 62. There are good reasons the 235 is known as "GM's Cast Iron Wonder". The 235 was produced during five decades. If you ever feel like your original drive train needs an upgrade, your truck is a perfect candidate for an original 3 speed on the column overdrive transmission - first introduced in 1955 Chevy trucks and cars.
Rod