Hi Guys, thanks for all the advice. I have lots to think about.

I may have too much spring for a relatively light truck, but it is easy enough to get thinner springs made up. Or run it with only one spring and 2 shocks per side. The setup has been overhauled with new pads, disks and brake pistons and shocks.
I will be adding additional pinion support.

I feel i need to alter the angle of the coilovers closer to the original Jag configuration. Which is my biggest concern and original question.
Is there much difference connecting the rear radius rods directly from the lower arm to the chassis as per brackets in my pic(parallel). Or should the rods be connected to an additional cross member and angled in towards the center as in the pic Kitz has shown ?

Regards Scully