Go with the racing version. You not only get the basic Dunlops? but you also get the Mini Lites. Use the basic 60's roll bar and make your own full cage. Thats what I did.
You cant see it very well but its an 8 point cage. I just used some Plastruct tubing that was the same size.
You can get a Mini Pickup from ScaleKraft. It does require you to lengthen the floorpan of a mini cooper chasis. I built one about 2 years ago. ScaleKraft also has the mini van, Mini "woody" Traveller, the broadspeed "fastback" version, the mini sprint "chooped top", and the riley elf.
Can you tell, im a mini fanatic. I own and restore the real mini coopers, so if you need any ref. pics let me know.
John