Hi there! I have a 93 lx convertible 2.5L mustang. My dad and I have just done TONS of work replacing the front and rear brakes, the brake cables, plugs, plugwires, and transmission filter and fluid. When we start it, it runs fine, and idles just fine. But whenever we drive it, specifically up hills, it just seems to lack the proper power it needs and should have. Any suggestions on what needs to be inspected or changed?