Will make a comfortable 550awkw, over 600 will need well into the 30psi range. Dean will point you in the right direction with parts, you are in good hands with them.
S1 and S2 are NOT the same. I would double check with the supplier to make sure they have bonnets for S2.
If the bonnet pictured is DEFINITELY a S2 bonnet I will be purchasing one.
Basically. Just a service, a buff and its ready to go.
It says pretty straight now after some rear alignment tweaks however 4th gear needs some wheel work lol