Rear end suspension project

[MaSnaka]

Hey guys,
I'm getting close to pulling the trigger on my rear end replacement. Currently I have the 8" with a wore out limited slip and drum brakes. I had upgraded to the Pro-shock coilovers some time ago but with single sheer connections. I'd like to get this all beefed up to an 8.8" or 9" with the posi traction, change my ratio to 3.55 or 3.75 (currently run CR top loader with 411's) get my coilovers connected by double sheer contact points, change from drums to disc brakes.

My ultimate goal is to upgrade engine performance of my 390 which currently puts out just over 300rwhp and 370rwtq. I'm likely to get over 400rwhp with a stroker kit and new heads. But I think I need a stronger rear end first.

Well now my wheels are spinning and I'm wondering while I have the opportunity should I change the 4-link set up too? Possibly to the 3-link? I have heard the 4-link is least desirable although I'm not sure why. Has this been done to a CR before?

I would appreciate any feedback or suggestions while I develope my game plan.

Thanks,
John