I have read through the posts on these SPC UCAs, and full disclosure I purchased a complete QA1 front suspension system including their K-member. The ONLY part that isn't QA1 is the UCAs, which are by SPC. The recurring problem I've had with the factory front suspension is not enough adjustment in the stock UCAs. The SPC UCAs certainly do not suffer from a lack of adjustability. I would really like comments from people who have actually used the SPC UCAs, but I also welcome opinions. I hope to be able to get the front suspension system installed in the next few months. My car is a 70 Roadrunner, 440+6bbl, and my primary uses are cruising the street and I hope to eventually hit the 1320 once or twice a month. For now, I only race about 4 times a year. Thanks.