A couple of days ago I started hearing a weird constant clicking noise in the engine,coupled with a cooling issue. I sorta think its the fan clutch just about to crap on me. I am thinking of either getting a mechanical or electric fan to replace it soon. If I go mechanical I'm getting the regular flexlite one and I'm looking at getting the black magic If I go electrical. I already have a 130 amp alternator installed and was just wondering which one of the 2 should I get performance wise and more bang for the buck. Any thoughts would be greatly appreciated,thanks in advance. BTW the car is a 90 mustang LX with 138,000 miles on the engine.