Blue Clipper Questions

[Barcode80]

I'm just full of substitution questions lately, but since my knowledge of transistors and biasing is still practically nill, I'm trying to make do with my current transistor stock for now. I only have 2N3904's, 2N2222's, 2N4401's on hand, so I've been trying to find layouts that match this. I also only have RC4558's, LM386's, LM741CM's, and LM324's as far as IC's go. I'm interested in the Blue Clipper, and I was wondering if a 4558 would work for the IC in it. I also was wondering which trannies you can replace in a schem with what I have, though I'm sure the answer is that it depends on the circuit

[burnt fingers]

a 741 is what should be in the blue clipper.  Just use that.  The 4558 has a different pinout and my need different biasing network. 

[3/4 North]

There are pictures floating around here of the insides of an original blue clipper - it used a 4558.  I was able to breadboard it with that chip no problem. But I built it with transistors using the discrete opamp. The schematic is posted in that forum. http://www.diystompboxes.com/smfforum/index.php?topic=48486.0

[Barcode80]

i am also confused about that too. i keep hearing "discrete" opampand such. what does that mean? is this basically taking an opamp circuit and replacing the opamp with discreete trannies? is an opamp just a self contained transistor array?