I did the Aspire swap a few years ago and mistakenly used Aspire LCAs initially. Severely threw out the castor/camber and my Festy axles even popped loose in very short order. For toe-in/toe-out the Aspire tie-rods also had to be spun out on the steering rack roughly 3/8 inch further on each side. Needless to say I switched back to Festy LCAs in a hurry and everything has been fine since. Festy tie-rods look to be the same as Aspire but they aren't so make sure to use Aspire ones on Aspire hubs.
Now I suppose you could gain more track width if you went with an Aspire steering rack (or maybe Aspire inner tie rods are longer in which case no need to swap racks) and Aspire LCAs, and the slightly longer Aspire axles, but then there will be the problem of how to mount/modify the struts in such a way that the wheels stay straight up and down. I don't think anything is insurmountable but all you're going to gain is 3/4 inch and a lot more work.
Now I suppose you could gain more track width if you went with an Aspire steering rack (or maybe Aspire inner tie rods are longer in which case no need to swap racks) and Aspire LCAs, and the slightly longer Aspire axles, but then there will be the problem of how to mount/modify the struts in such a way that the wheels stay straight up and down. I don't think anything is insurmountable but all you're going to gain is 3/4 inch and a lot more work.
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