the A20a3 is a not interference even tho the manual says it is....we have had 10-20 of those cars come in back in the 90's , I even broke my belt on my prelude a20a3 doing 70 on the freeway and just threw on a belt and still driving it this day ,also the old 88-95 civic 1.5 didn't bend valves either ,the 90-93 b18 tegs were safe from bent valves most of the time. as we have yet seen any of these motors bend valves unless they had a cam then all bets were off.