
In regard to the brass threaded sleeves, I assume this is going to be a show car and kept dry so it probably isn't relevant but I wouldn't advise using any sleeves in timber as it encourages damp and then rot. It would definitely be advisable to pre-drill the holes for the sleeves before the treatment stage of the timber prep then fill the holes with treatment and let them soak over night.
I hope I'm not taking a liberty! I can hear my Dad saying something about sucking eggs.