I second the SS RE7's. I have them on all 4 corners and they are excellent. You can see the install in my "tahoe" link. I also put front and rear sway bars in and I think I have achieved your goal: "Cadillac ride, Porshe handling, Drag car power" (with a 476 under the hood
). I also run KYB Gas-A-Just shocks.
Most guys on here will tell you that ***************** has the best prices and service, and I agree. You can get the plates/cups/bags/air management/etc all from them.