Front Alignment Specifications A-body With Tubular A-arms

[1989GTA]

I just installed upper and lower tubular A-arms on my 1965 Buick Skylark. These are supposed to change the caster 4 degrees. So the questions is, when I take the car into the shop to get the front end aligned which specifications should they go by. I thought I saw somewhere where someone used the specifications from a 1998 Camaro. Any ideas appreciated.