I was thinking of getting a wah pedal for my bass. I was looking at the Morley PWB, but since it's hard to find, do you guys know an alternate to it. I want to sound like Cliff Burton.

Cry Baby Bass are pretty good, I've tried them out. Perhaps you should test one out at a local Music Venue?
There is no alternative to the PWB. I have one and no other wah I have played can compare to it. Dont settle 4 any other wah just wait until there is one on ebay. I see them on there every know and then. But if u cant wait. I would go 4 the Morley Dual Bass Wah, so u can at least have the same amount of sweep cuz Dunlops suck!!! when it comes to sweep.

Member of the Morley PWB Owners Club.