I play a 2 different handmade Lawler C7 trumpets.  A raw-brass C7-4(big 5'' bell) with a 1A leadpipe and a #3 Extra Large Bore.  This horn also has a hand-engraved bell and is a copy of a Martin Committee Large Bore trumpet, the model played by Miles Davis.  I also play a Lawler C7-3 with a 1A leadpipe, which is essentially a Medium-large bore version of a Martin Committee(with a 4 7/8" rim).  This horn is hand-engraved throughout, and has a lacquer finish. Check www.LawlerTrumpets.com for more info
I use a Monette B5 mouthpiece