what rear setup to run?

[GrnMchin]

After reading this tread I seem to have more questions on rear suspension set up's then before. I am at the stage in my current project (68 Camaro) were I need to figure my suspension options as well. The rear is my main focus, but maybe some of you might be able to help me as well. I'm looking into a mini tub opp, but cutting into a already weak rear sub frame seems to me a poor option. I leaning to the Art Morrison rear frame kit and tri 4 set up, but not 100%. I'm using the stk frt sub frame that has been fully welded and some support added and looking at GW or speed tech for the frt.

My main goal is to take as much flex out of the body so the suspension does more of the wrk with out spending my life savings. The fab end of this is not an issue for me, more trying to keep the price reasonable. Any suggestions of feed back would be helpful..