So after some help diagnosing a hard brake pedal and air noises near the floor I've concluded that I need a replacement Brake Servo Booster. Anything thoughts on what I should do?

AB and RoversNorth sell them for around $500 and Roverlandparts sells a used one for under $200. But autopartswarehouse sells an aftermarket booster for just under $200. Brake Booster - Auto Parts Warehouse

I have ordered parts from APW in the past and had no problems but your opinion counts here. Also is there any way to just rebuild my current Booster?

 

Get the "Proline" version from Rovers North.

There's aftermarket items that sell for under $200. They're junk.

 

Call Paul Grant and get a good guaranteed used one.