Hey guys new here and struggling to find the info i need can you get a 525 or 520 pitch front sprocket or 1 that fits of another bike that fits the spline pattern and is a 525 or 520 for a carb model blackbird me running a diferent rear end that uses a 525 sprocket

 

Welcome to the forum steel.
I found some 520 conversions for you.

In this LINK it say it will fit. Scroll down to the description and they list what bikes it fits. Perhaps you could find a stock sprocket for those bikes cheaper.

Here's a LINK to a straight up conversion.

And one more LINK that is a bit pricey.

Check the tooth count before purchasing.

If you find something that works please report back.
There is also a CBR1100xx section in the forum but it doesn't get visited often however it would be nice if you posted your finding they for others to find in searching.
Good luck.