Recently started a mustang project and have decided i would like to get into some road racing and autocross, likely starting in 2018. My question for people more familiar with the rules then I would be what classes would my car be eligible for? Its a 1984 mustang and will be receiving a ford 302 windsor motor. I have tried reading through the rule sets for SCCA racing, and have ended up more confused then when i started. Also, i have noticed some classes allow for subframe connectors with only 3 points of contact. One of the options for my car is from Maximum Motorsports, but the rear section runs along the entire length of the rear subframe before it turns up over the rear axle. Would welding the whole duration of contact are count as one of the 3 points, or would it make this mod illegal for some classes due to the fact the rear portion of the subframe connector is in contact with the rear subframe for a length of easily a foot or more. I know the design is to have two points that straddle the rear subframe and get welded in, one point at the seat mount, and one point at the front, but welding the rear portion along the entire area of contact would be one point of contact, i just need to know if SCCA would agree or disagree with that observation, or deem it illegal as that one point of contact is too large/covers too large an area of the subframe.
Also, i know factory mounting points for suspension and/or subframes in some classes must be retained and un-altered, would switching my rear end (7.5 to an 8.8 out of v8 model mustang) count as changing these points even though the geometry is the same, and that rear end would have been the factory unit if the car was a factory v8 vehicle instead of a factory 4 cylinder car?
and for anyone who may comment saying my car may not be the best choice, my intention is simply to have fun and learn on a relatively cheap and easy to fix/mod platform, that i had for another project/adventure(first motor swap, first stick car), and i do not intend to go out and be competitive, win, podium, or even finish higher then last in whatever class the car falls into or is prepped to run in. No i will not run the car stock, as these chassis are prone to twisting and shifting if subframe connectors are not installed, and if possible/legal i will be welding in re-enforcing plates on the chassis mounts for the upper and lower rear control arms as those too are prone to twisting or tearing/cracking if put under heavy strain. I dont want to utterly destroy my chassis my first time on the track, so said mods will be performed before i get involved in scca autocross, hence my question of class legality.