First off you should look at mine it's for sale on here lol. The second gen your looking at should have the 3.0 3vze. It's kinda low on power for the vehicle its in but does its job. Things to look for a the steering end link recall and the head gasket recall. Other than that these are among the best built vehicles you can buy. I don't know what you mean by a Jasper engine though. Look at yotatech.com they have covered every single aspect of these vehicle you can encounter.