I have been doing some research. Haven't came in the right thread. Question is I want to add amp with after market woofers.

Any write up or opinion would appreciate it

 

if you just want woofers, a LC2i is enough. I recommend you get something like the JL audio Fix82 or FIx86. its more expensive, but allows you to flatten the EQ and avoid bass roll off ( the newer LC2i's also have the bass roll off help, but do it in an artificial way).