Car looks nice and sounds like you have some good parts. What tires are you running? If you're not running 200TW tires such as BFG Rivals, Dunlop ZIIs, Hankook RS3's or equivalent you will be at a disadvantage. That said, if you've never autocrossed before the tires may not come into play. Depending on how packed it is, and the number of runs you get, you may have the chance to go through a big learning curve in one weekend. For ex. at the FL event one could have gotten 30+ runs if one wanted to do so. However I recommend working to get better each run and not just going run after run without reflecting and analyzing each run, while also getting as many runs as you can. You will hit a plateau after so many runs, and it depends on how hard you try to improve from there that determines if you can break into lower times. What helped me a lot this past FL event, was to video record the runs and analyze the video and record some of the pro's and compare. Also, Kyle Tucker was very helpful; super nice guy eager to talk. He rode with me and gave me some pointers dropped my times .5s instantly. I ended up getting second in the SM class and really learned a lot. I will not be at the Springfield, but wish you the best of luck!