I'm trying to find out if I can get a 454 with a turbo 400 transmission to fit in my 11993 XJ6 sovereign. Any response is welcome, hopefully it's good new though.

Hi Cpl_Cheeto,

Welcome to the Jaguar Forums!

I don't think you'll learn much from the members of this particular XJ40 forum because we're all trying to maintain our cars in mostly original condition. No judgement about your idea, though - go for it.

You might try posting your question in the "Other Jaguar models" forum at this link:

Other Jaguar Models / Concepts / Replicas - Jaguar Forums - Jaguar Enthusiasts Forum

You might also post your question in the "Lumps" forum at Jag-Lovers.org, which caters specifically to Jaguars with engines by other makers.

In the mean time, please visit the https://www.jaguarforums.com/forum/n...-intro-must-5/ and post an introduction so we can learn something about you and your Jag and give you a proper welcome.

Cheers,

Don