Do a search for Prothane - they make great urethane aftermarket bushings. But you better have a press handy, as they can be a booger to fit.
Actually, getting the new bushings in is not terribly hard. All you need is a lng bolt and some large washers. What can be REALLY hard, though, is getting the old ones out. THAT typically requires a press. But you can also remove them by burning out the rubber and cutting the sleeve just enough that it can be collapsed or easily hammered out with a socket.
I had found a vx engine that has 280,000 miles for $50, but i don't know if it's worth rebuilding it. A few people here are there say it's not a smart buy because many of the d15z1 sensors are expensive, i may have to rebalance it, and i don't have the tools to work on an engine (just little basic wrenches and sockets). Here's the page of the engine i'm considering to buy. Let me know what you guys think about it.