I have a concept amp that is 135 x 2 and 500 x 1 @ 4 ohm for a little over 100 shipped(do to canada) Just pm if interested. there are specs and pics in my fs thread on here.
Aura RPM 4200 4 ch. amp. I bought it from Parts Express and never used it. 10/10 It's rated at 50x4@ 4 ohms and 150x2@ 2 ohms though i have been told it is very under rated.