It's been awhile, but I believe Colliding Visions is a Grade 2 that has a fairly simple low brass part that could be covered by your instrumentation.
CCC top band with NO trombones. Long story but I have no trombone section. I have 2 very good bassoons and a region band euphonium player. Also have 2 decent tubas. Looking for suggestions. There are no trombones to move up.