You might want to take a look at these guys,

BRITISH MOTORBIKES
North Hollywood
818-506-4022

I haven't had any dealings with them myself, but the bikes they have parked out front look nice enough. The only custom shop in the area I know well enough to trust with my bike doesn't do Triumphs.

Let's hope there's intelligent life somewhere in space 'cause it's buggar all down here. -- Monte Python