There sure are. Any 760GLE is a 6-cylinder. And aside from the few surviving 760 Turbodiesels, they are all B28 or B280 V6's.
The 760 Turbo was sold as a fancier alternative to the 740- all of the GL type trim level, leather, sunroof, alloys, and the power of the B230FT turbo 4.

While the late V6's are much improved engines, it's a rare car and harder to find engine parts for it. The support even on here is likely to be weak. Very few shops, even the Volvo specialty shops, are willing to work on these things.

There are a lot of alternatives out there, and as far as old cars go, a 740 ages better than a 760 any time. Much more stuff to go wrong in the 760 that the average person just isn't going to be able to fix.

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Rob Bareiss, New London CT ::: '87 244DL/M47- 234K, '82 245T/M46-182K, '89 244DL/AW70- 212K Not too distant past: 86 244DL 215K, 87 244DL 239K, 88 744GLE 233K, 88 244GL 147K, 91 244 183K