Hi and welcome,
Most bushes are kit specific, there are a few which duplicate but not on the whole. The easy way around this is cone bushes and a set of calipers and you can turn most kits. The set I have are like the ptfe bushes sold for CA finishes but mild steel, you will need to check oftern when turning but I do anyway.
Alternately you could check out the IAP website which has amember publish a list of all kits and bushes dimensions a great read at bedtime 
