Difference between 4 speed and 5 speed manual transmission

can you replace a 4 speed transmission with a 5 speed
5 vs 6 speed manualhow do i know if i have a 4 speed or 6 speed transmission
difference between 4 speed and 6-speed automatic transmission
difference between 3 speed and 4 speed automatic transmission
a five-speed transmission is in third gear. which is correct?
best 4 speed manual transmission
what is a 4-speed manual transmission

One thing to remember is that pretty much all 4 speeds end-up with a 1:1 high gear (as do pretty much all 3 speeds and 3 speed automatics), so thinking about 4 speed vs 5 speed? Most 4 speeds aren't overdrive in high gear, and most 5 speeds are. Overdrive means the transmission is geared to turn the driveshaft faster