Djkato

I have a 2003 Jaguar S-Type 3.0 Bass I'm trying to figure out which best application to go with possibly a Chevy small-block carbureted which one would be the easiest fit and where to get them out some parts I know I will have to do the drive shaft as well I read a little bit about some of these Chevy engine mating up with the Jaguar transmission for I had mine rebuilt recently but no big deal if needs to go any help you would be appreciated thank you very much