think this is a good buy?
No.
Purchase an Ingalls Balljoint. Thats the only way to do it cleanly. It requires that you have the 90-91 upper control arms in your car, and if you don't, then you'll need to hit up a Junkyard or MattMiner

lol

, and see if either has a pair.
im
Ho, that is the only way to go with these cars for camber correction. Unfortunately, I don't sell Ingalls anymore due to toher reasons, so i can't get you a 'hook up', but search eBay, and you'll find them there for a really good price.
Oh, and while you are looking at eBay, take some friendly advise... see a "balljoint" on there that is a ton cheaper, and looks like it does the same thing, but isn't Ingalls? DONT BUY IT! Don't be cheap here... lol! The internals of the Ingalls balljoint is actually made by the same company that makes the internals for your OEM balljoint... the others are not. This is an important component, don't risk your car over $20... If the $20 is going to break you, then you prolly ought-not be modifying cars
