Hi and welcome,
ok firstly loads of people have had clearance issues with the rear wheels and there have been different solutions
fit bigger wheels
spacers
spacing out the upright and using shorter wishbones
or my solution was to make the rear uprights slightly different I moved the lower holes up by 5mm I have not posted this mod as I havent actually finished or driven my car
also I havent asked others oppinion on it
as for starting new threads go to the section you want to start a new thread in e.g chassis, at the bottom of the list is an icon (start new thread) click it and away you go
Ray