is it worth installing cam in stock 318?

thanks again for all the helpful insight. the engine just turned 40k miles and has never been rebuilt, including the heads. This deal is kind of a temporary thing until there is time and money to do something better. We have a 360 block and rebuilt magnum heads and eddy magnum air gap, for down the road. i was just hoping for a little more fun for a year or two until we can do more.