I am converting a GE Profile Model: JGSP48BOH1BB from LP to Nat. and since this number doesn't come up I'm assuming it's a JGSP48BH1BB
Your assuming correctly. In fact it a zero and not the letter O, JGSP48B0H1BB.
But in any case for some reason GE has been dropping the zero in there model numbers.
I was not able to find a service manual, but maybe someone else will come up with one.