I wouldn't use those Bosch plugs in a TJ engine. The best choices are the factory specified NGK ZFR5N plugs or if you only want to change plugs every 60,000 miles rather than every 30,000 miles you can spend approximately twice as much and go with double platinum plugs such as Autolite APP985 or Champion 7034.
Personally, I don't see much point in spending the extra money for double platinum plugs. They do not provide measurable performance benefits over the specified NGK ZFR5N plugs and since I typically pull the plugs to check their condition at 30,000 mile intervals anyway (every 3-4 years based on my jeep usage) I might as well install fresh plugs while I'm at it.
Personally, I don't see much point in spending the extra money for double platinum plugs. They do not provide measurable performance benefits over the specified NGK ZFR5N plugs and since I typically pull the plugs to check their condition at 30,000 mile intervals anyway (every 3-4 years based on my jeep usage) I might as well install fresh plugs while I'm at it.