Nice, They have been workhorses for me.
I have all the flavors: 4000's, 2500's, and qsc 2450's.
I bought one like that off of someone on here. I forgot that it had the slower fan in it, and I blew it up in about 20 mins. Oh well.
Be careful with them if you listen to bass heavy music when they are modded, the stock fans will barely keep up for me.
Without the fan mods mine run about 60-70F higher than ambient temp with music, I think 140+F is pushing it a bit. I'm kinda rough on my bass amps. But they keep chugging along.