I just upgraded from the 1050 to the 990/7125/LFM-1 pkg. I purchased the Outlaw PCA's to go along with the upgrade. I found the PCA's to be simple to install. Not sure what all the fuss is about, I've read other threads about others having difficulties with these plugs but I found them relatively easy to install. Yes the fit was tight, however; once I became familiar with the locking mechanism, I got all 6 of my PCA's to be plugged in securely & quickly. Let me just ad that the sound difference from the 1050 to the 990 combo to be exceptional. I'm definately glad I decided to move forward at this time!