I was at the same junction last year. I bought a rolled over U15 and needed a port-a-power to push the cowl and rear fenders back into alignment after I stripped it down.
I spotted two brand new Harbor Freight port-a-power kits at a local thrift store. They were both the same, never used, and complete. Evidently, they were donated by Harbor Freight because they were the old stock in the orange color, the current inventory they sell is a red color. These kits are the smaller size kits (of the two sizes they sell) and they worked just fine. I figured I'd buy both at the sale price of $50 each, and would use the parts from one as they broke, but I used the first kit and never even put oil in the second pump. The small kit did everything I asked it to do without any problems. I was so happy, I bought their "pull ram cylinder" accessory.
I'm not a big on buying cheap tools, but for something you might use "one time" on one special repair, it's hard to argue. The other choice is to find a used quality tool on craigslist.
John
