i started driving transport in 1974 retired in 2012 completly retired in 2016 after finding my roots driving dump truck in northern ont. driving has never changed ,do it best you can , any weather any traffic any year it's all the same accident's are the fault of drivers um just drive it while you can much as you like !
This is where I started, helped enough for me to be satisfied for now. May do more if I do a complete rebuild. - and yes - I am cheap.
I have a friend with a 34 Ford pickup with a full house flathead mill , old Ford 3 speed trans . and 2 speed Columbia rear . I've been behind him on turnpike and he going constant 90 mph !
My 37 is my long distant car. Vacations and long weekend trips. Running an 8ba with the original 3 speed and rear end. My gearing is the 378. Running large rear tires. Original to this Nebraska car with nothing but long roads. It will run comfortably for hours at 70mph. Looks to me you just need a rear end gearing change. Very reliable.