If you have a jag with the XK engine in it, is there any other kind of real Jaguar, then this book is for you. You may not want to mod your rod but to read about the tips & tricks employed over the years in the tuners quest for horsepower is a treat.
Some of the tips are easy, not costly and have no negative effect on reliability, so you may want to put them in place. But when you want to really extract some hor$epower out of that venerable ole E-Type, reach deep into your retirement account.
But you will enjoy the smiles over the miles.
Ciao,
geo