If the Stampede and 700 share handle holes the it sounds possible. I grabbed this from the comments.
"The sear burner has 5 mounting holes. Two of them line directly up with the Stampedes side handle. I did have to notch out the bottom of the sear burners side plate to clear the grease chute."
Dont think this is bad to do, I found that post on the Rec Tec Users Facebook page, if you use the search box and enter sear mod handle I was able to bring up the "thread". You can likely get more info than I can, I am a lurker at best on Facebook...and not even very good at that.
https://www.facebook.com/groups/RTGOOA/search/?query=sear%20mod%20handle