Hi all, very new to RC cars and new to this site, so I have a few questions. First off I have a chance to purchase an MRC STR 4 Pro and I would like to know the diff between that car and the Pro II. I thought this car may be a II but need to know from someone here. And, are the parts for these cars readily available? I have a Schumacher Mi2 and I am selling it because the parts are tough to find. Thanks.