Maybe 3-4 days to 75 or 80 % but 1 to 2 gallons is better than a Cat's Paw special.

And in a pinch, you could pick "that car" up, put it on your shoulder and carry it home.
Just watched "again" a program called Vintage Voltage. Made in the U.K. where they electrified an early 308 Ferrari. From the factory, maybe 200 HP ? Using a Tesla motor and gear box swap, about 400 HP and zero to 60 in about 3 seconds.

About a 150 mile range. And it would be a toy so mileage would fit the program.

So, if a Tesla will go 250 to 300 miles on a charge, thinking you could do a swap on just about "anything" and get close to the same results?
Thinking 32 Ford 3 Window coupe . Lots of room under the hood for batteries and the weight in front would match the engine weight so it would still handle good? Go light weight glass body and it should go like STINK!! You would need a sound recording of EXHAUST PIPES and spinning tires to make it real.
Or, go with a gutted Prius Hybrid. (no charging needed) I figure somebody has already done it??