Any ideas for high gravity stout

[phoneman310m]

Looking for some ideas or recipes for a high gravity stout would like it around 8-10 abv I have brewed about 10 batches all 5 gallon recipes but not a big beer can you use same recipe that I have and add extra extract and if so do need to more grain when steeping any help I would appreciate thanks

 

[tacks]

https://www.homebrewtalk.com/forumdisplay.php?f=68