Aromeo14

So I just got my first mustang, its a 93 5 speed with a 4 banger N/A. Now I know search is the way to go and I have used it. I was just wondering if I missed anything or some advice could be offered or just let me know if I'm wasting my time. Anyway, I was looking to get that little bit more out of my pony just like everyone else, what seem to be the best ways other than the turbo route would be intake, exhaust, cams, and valves. If I missed anything I'm open to suggestions and also part of getting the 4 banger is I already have 351w bronco and a 5.7lv8 tahoe and want some fuel economy just looking to make it fun too thanks in advance