dish a few quid for imperial tools, wont cost you much and get a B4! I'd choose one over an RB5 anyday, they are so easy as you only 1 base setup for any condition compared to any other car on the market, i don't even run one as i bought the X6 conversion for it which improved me even more with it but i been playing with my m8s b4 for awhile he forgets i have it and it reminds how good the car is. There's just not enough support for the RB5 in my opinion and others, havn't seen any setups for them, not enough people run them, why? Do the math.
all that breaks on the b4 is front wishbones, bulkheads and the hubs i'd say this is common on all cars as they are first in the firing line in most crashes