If intending to buy torx bits for your drive shafts buy good quality and buy two. Try to get 3/8" or 1/2" drive sockets that fit. They may be only M8 12.9 bolts at 33nm and likely installed with Loctite but after being fitted for some time with water, salt heat the bolts will feel like 133nm to loosen. Also carry a good hammer and punches a good clout on the head of a very tight torx bolt helps loosen and on most occasions stops lower quality torx bits from fracturing.