The E's always melted my heart (deep down a former/motor guy). I rode in an XKE once, that little short-stroke V12 sounded unearthly, to a guy used to V8s/6s. I understand that their big 6 was overall better. Big inline 6s often have more torque, as well.

I never could afford a real Jag, but went on a binge with several Datsun 240z. The IRS (EDIT: That is Independent Rear Suspension, for the tax-wary)  was a very sophisticated concept at the time. Only Jags and Corvettes had that, way back.  Straight 6, dual carbs, nothing at all like that fat and heavy 280zx that was popular. The first few 240s had more horsepower than cubes. That's easy now with computer motors, but astonishing for a factory car in '71-'72. Factory redline at 7k, just a cam and better breathing can give the stock motor 8500 rpm....

EDIT: I still have two '72s, the best year. When my ship comes in, they will live again. Nothing seriously wrong with them, they just need time, that I have to give to the slavery job now.