I think it all depends on how you set it up.if you want to set it up for racing then you will want to set the engine as far back as you can so you will have to create personalized mounts and beat the entrance to the tranz tunnel and create new gearbox mounts. this will give you more room at the frount of the engine bay to install a larger radiator and electric fans. even if you dont want to go this extreme u will still have to create new mounts so its almost worth going the whole hog. as for the diff and axles biff them theyll just keep braking, it happened to my mate. use a L200 mitzi diff or starion or something else strong with the required ratios. ive even hurd of people shorting ae86 rear ends to fit. lsd and disks on the rear sound nice aparently the wiring for the 4agze isnt to hard to set up in the 1200. the price depends on how keen you get. but i imagen it will not be cheep.