5 Speed swap

I have no upside or downside to what people do to their cars.
I just expressed an opinion that makes sense. There is a reason why trucks and cars have different ratios in their transmissions.
If someone wants to ignore good advice and follow a path that will be inferior, that is up to them.
Some people are so invested in pinching pennies, they will work 3 times as hard making a square peg fit a round hole to save 4 dollars.
I'm certainly not rolling in money but I spend the cash when it makes sense to do so.
I love making cheap stuff work but when the final result is grossly inferior to other options that were available to me, I spend the money.
The simple truth is....
The car will perform better with a transmission originally designed for a car. Some people choose to ignore this in the interest of saving money.

Look at what the OEMs do with transmission ratios. They pick them to suit the applications. Trucks get deep 1st and second gears to get the truck moving with the maximum load it can carry or tow. Speed isn't the goal, getting 10,000 lbs moving without burning the clutch is high on the list though.
For example, the Tremec 6 speed in the newer Challengers use a 2.95 to 1 1st gear.