I love Atlas,s, I had a Gartrac one (£3500+) in my old Mk2 and it wouldn't break no matter what. I've just got a semi floating Atlas for my new Mk2 and I only paid £1500 for it with a 5:1 ZF diff and it's bracedfand guarded!
They are mega and can take the power, if they don't fit Gartrac can narrow it for between £250 and £700 depending on wether it needs new shafts or not.
my new one



my old one (with my bald mate!)