Photo: TREMEC TKX: Want a manual but need to save space? The TKX is the first TREMEC transmission developed exclusively for the aftermarket. TREMEC took the best parts of their OE platforms and ...

In our tests, we've found that in some cars a manual transmission can improve gas mileage by a significant 2 to 5 mpg, compared with an automatic, and can cut a car's price by $800 to $1,200.

This EV conversion used exclusively new aftermarket parts, so there's no salvage ... but the builders want to keep this car a manual, so a new transmission will likely be put in its place when ...