talk to john or marshall at jacksons, like morison said, he is the man to talk to as he has been building racecars and tuning them for many many years.
i believe the cusco cage is blue isn't it =D, aren't the sti cages pink and for the RHD models? i remember seeing one bolted up in an sti from BC.
do all these bolt on cages sacrifice the rear seat? i remember looking into a cage for the GC and came up w/ all losing the rear seat capabilities.