My fuel pump went bad too. I was thinking bout goin with the inline? Why is the 2door fuel pump higher that the 4 door blazer!

 

IF you can find an inline pump that will supply sufficient pressure and volume, you'll need to drop the tank and modify the pick up on the old pump module, (the inline pump will not pull fuel through the old pump. As with most things, there's more work involved to cobble it, than to fix it right.

The 4DR tank is midship, inside the frame. The 2DR tank is aftaxle. Different tank configurations, and the fuel pump modules are NOT interchangeable.

 

I just got a 2000 4dr 4wd Blazer. Needs work. I need to replace left front hub, and probably a fuel pump. I am still diagnosing that problem though. Driver window not working motor or switch (worked when I bought it)..
In re to fuel pump, I have read quite a few posts re Delco vs aftermarket. I do much prefer OEM but the Delco price is a shocker; about $300 here locally. Has anyone any experience with the following website: http://klova-autoparts.tripod.com/klova/index.html
They have Delco MU85 at $165. I just now emailed to ask if this is a genuine new Delco part.
Also, any suggestions the window issue?