Gen 2 Camaro Control Arm choice

[gerno]

In another thread I've shown details of the Speedtech TA rear I'm installing on my 72 Camaro. I'm also going to add the Speedtech Chicane front coilover mount in the coming week or so. I have yet to order up the coil overs themselves since I need to get the mount install and measure the car at ride height to order the correct ones. Since I'm doing all of this I figure I might as well look into changing the control arms as well. I currently have PTFB uppers with tall ball joints. Lowers are factory that have been boxed and the bushings are Delrin. I try to track the car as much as possible and have already spent too much money so I want to be sure I get it all right this time.

Here are the reasons I am thinking to change the arms.
1. Better geometry available?
2. Tire clearance - Currently have 245/275 tire combo and want to eventually move to a 275/315 combo.
3. Ease to inspect suspension components or adj shock/spring setup.
4. LCA bump stop clearance. I like the car lower and there is not too much LCA/frame clearance.

Can anyone provide recommendations on UCA/LCA setup that would be better suited than what I currently have?