Well I ordered all the parts for my upper control arms, I went with.
1-1/4 OD x .120 wall DOM
Weld In Tube Adapter 3/4-16 Thread
3/4-16 Heat Treated CHROMOLY Heim rated at 34,000 load capacity
I was going to use hims on everything, however after a lot of reading I decided on using bushing on the control arm to frame joint.
Steinjager J0012587 Poly Bushing Weld On Kit 1/2 Bore 1.75 Wide
Also does anyone know of a good program to calculate the motion ratio vs. Suspension travel ratio? or a good 3d molding program that can?
The two coilovers i'm looking at using have a 3.36 stroke and a 3.86 stroke the stock boxster has a 6.47 stroke.