4-1 header compatible with 1981 GPz 1100

I'm trying to get my GPz 1100 on the road and one of the last things I need is a header. I prefer to get one used, but not having any luck.

Can anyone tell me definitively what other year/model are compatible with my 81 GPz 1100? Suggestions on a good place to buy new would be welcomed.

Thanks

Bump

Z1 has headers. Try JC Whitney. Ebay.....Any header for a KZ1100/1000 J motor should fit. I have two aftermarket headers on two of my bikes and they are just fine, oil filter clears and universal bracket attaches ok. I like the sound of the V&H. Can't afford a Kerker....chris3