Your vin has too many zeros. It's probably 1E12049.
Unfortunately, xkedata.com doesnt have any info on it. https://www.xkedata.com/cars/detail/?car=1E12049
If you google "jaguar 1E12049" you can find lots of pictures of it along with recent auction history.
Given that Houston is reasonable close to Austin, you might call ClassicJaguar.com and see if they have any experience with it.
Good luck,
Jim