What size carbs do I have on my 70 cb450. I'm looking for some stand alone air filters and I don't know what size to look for. Also, how hard is it to change controls on the bars. What have you guys done. I just took my bars off and a few of the connections were pretty bad. Is there any good alternatives to this. I'm stripping down the bike quite a bit and could probably do without some of the extra controls. Any idea's