The only bad one out there was the 240sx. It was an RB25 swap so it was very powerful but the suspension and chassis was shot. Poor quality tires and a very fresh driver (never autocrosses or anything even vaguely close to track before) Huge lines to get around him. to the point, he could never use his car even in straights as he had to use straights to let everyone pass him.
Next time I'll get to run with the more experienced drivers so hopefully I won't be the newbie causing backups