Iknow what you mean. I weigh 350lb. and 6ft.
Here is a catalog I got mine from. sent my measurments and it fit perfect. It is a flight jacket and not a motorcycle jacket. It feels good from 65deg. down to 15deg. havn't ridden below 15deg.
Try this catalog:
www.kingsizedirect.com I'm pretty sure they have cycle jackets to.
I paid $80.00 for the one I got.
POPS