if i can figure out an engine first ill know if i even need a cage.a 509 cam engine will either run low 12's or somewhere in the 11's.im gonna get one but,im not worried about the rest of the car i still have to build most of it,all thats been done so far to the car its self is mini tubbed springs moved into frame,frame is tied,and has motor plate mounts,manual brakes/steering,non a/c car,the car is gutted,im only gonna run one poly racing seat in it with some thin carpet to cover the metal.the 67 dart gt will be 75% track the other 25% will be around the block,and possibly car show.im gonna run a dana 60 with 430 gears or 456 gears 29.5x11.50x15 m/t tubed slicks.