It's tax time, and after paying some bills off, I will have an extra 1,500 left to "invest" in my mustang. It's an 87 lx 5.0 and it has the subframe connectors, underdrive pullies, and an accel supercoil. What mods do you recommend I do. The car is in need of an entire interior, and paint job. Other than that it's pretty solid. Any responses would be appreciated, thanks.