I have a Jaguar XJ6 with a LT1 motor put in by Jaguar them selves how much is the car worth cause i was told it could be a specialty car.?
First... Jaguar would NEVER put any other brand engine in a Jaguar! It is possible a Jaguar dealer did after a customer blew the original engine but even that is doubtful. I believe whoever sold you the car just told you a whopper of a story to make the sale. This is just another street conversion. As to value??? Well, first it is an 88 Jaguar. That in its self makes it worth about $1500 if it runs and passes inspection. Add the LT1 for another $500 and under ideal conditions you might get $2000. Any offer over that you better jump on and consider any offer under that as well.