i know that the bach stradivarius 180 series is the proffessional trumpet that need no further upgrading, is there any place that i can customize it? i would love to have a rotary valve trumpet. Does anybody know how to get rotary valves for a Bb trumpet as good as the bach strad?

You really can't take a trumpet with regular valves and just turn it into a rotary valve trumpet. If you want a rotary valve instrument, you're going to have to buy it. If you do buy a rotary instrument, get it in a different key. There is no point to have to Bb trumpets. And i'm going to tell you, if you want a good rotary valve instrument, buy Scherzer.