APS Sharkfin+Draco Underfolder

Hey everyone, I'd like to get a sharkfin for my underfolder Draco, and was curious if anyone knew whether or not this sharkfin sits far enough back for the stock to clear it.

I know reverse underfolder dongs exist (I have one), but I don't wanna chop my surplus example and the PSA new manufactured reverse dong is...disappointing.

Thanks!