Is it possible to put a tubeless tire on a spoked tire?

As the others said, yes you can use a tubeless tire on a spoked rim but you cannot use a tube tire as a tubeless. The tube tires lack the thin layer of rubber on the inside of the tire that seals it.

I've been through a lot of tires of different brands over the years and I like Dunlop. Dunlop 404 tires are good, but for way greater mileage go for the Elite 3. If you don't put that many miles on your bike, a 404 will require changing more often but that's advisable rather than let the tire get really old. If you put a lot of miles on, then go for the Elite 3. It costs 40-50% more than the 404, but if you have to hire a shop to change your tire, you'll be money ahead. Depending upon how you ride, you will probably get 10,000-14,000 miles out of a 404 and probably at least 20,000 from the Elite 3.

I assume you mean a spoked rim.

You can use a tubeless tire on a spoked rim provided that you fit a tube inside. This is a common practice among owners of older machines who wish to use more modern tire design. The addition of a tube to a tubeless tire does lower its speed rating by one step however. Just be sure to order the appropriate size tube for your new tubeless tire.

130/90-16 tube-type Dunlop D404F, front/

170/80-15 tube-type Dunlop D404, rear

You can run a 'tubeless" tire with a tube on a spoked rim.

You can also run it without a tube if you can seal the rim so that air does not escape past the nipples. You would have to install a Schraeder valve in the rim. There are some commercial schemes for doing this and individuals have done it on their own. Be aware that a spoked rim lacks the bead retention shoulder that you find on tubeless rims.

The inner tube will cause the tire to run hotter. Provided you don't over load or travel above 80 mph you should be fine. I would reccomend continental touring tires. they are the leader in high milage tires.