On my SR4, I do my own setup/alignments. I've been running Hoosier slicks, scrubs from the SCCA FE class.
The Hoosiers are bias ply slicks and it seems that my car runs best with low camber -- around -0.5 degrees rear and I was planning to experiment with moving the front from -1 to around -0.5. These settings match what the FE and E sports racer people seeing for these tires.
Anyway, beware going this low. It appears that the rod ends only have about 1-1/4" of thread and it looks like (at least with my setup, with a relatively high ride height) that would have around 1/4" of engagement between the rod end and the camber adjustment threaded tube.
I found rod ends that are 1/2" longer on McMaster (and they're $25 vs $65 on Pegasus Racing) that I'll be trying this week.
I know this doesn't apply to most people who are running radials and other bias ply tires that need more negative camber, just wanted to let folks know.
Just in case anyone else needs this info...
The McMaster rod ends work fine and do have 1/2" longer threaded ends.
It appears that the older Prosport/Clubsports offered two upper wishbones:
https://www.radicalonline.co.uk/products/SW0011-%252d-Wishbone-Upper.html
https://www.radicalonline.co.uk/products/SW0034-%252d-Wishbone-Upper.html
The first (high camber wishbone) is the standard part on SR4s and SR1s. The second part (low camber wishbone) is not listed as an option for the SR4 and SR1 but looks to be interchangeable since the Prosports/Clubsports could use both.
