First you must know what kind of movement your UPO has. If its ETa, or asian eta clone, you can buy gen. If not, the hands and dial wont fit. Now if you're willing to pay $250-$300, you can go either to ofrei (otto frei) or cousins uk. But, you said uou dont want to spend the cash. In that case I guess your best shot is to wait for someone who went Franken with his UPO, to offer his rep parts for sale here. There are a lot of franken UPO builders so it should be possible. Or maybe, when you're lucky, one of them will read this and offer it to you...