The battery weight alone exceeds the load capacity of a 90s miata by 2x.
And i wonder how well it would handle with the 1000 lbs of battery under the hood or in the trunk, my guess is not very well.
The battery size really surprised me. I can see this working well with 1/3 the battery, but 1000lbs is crazy. The lighter motor and removal of the fuel tank will help a little, but replacing a heavy engine in the front with a heavier battery in the back can't possibly work.