You can run a 26 on it as its a three blade ive also ran 27p shooters but in order to work well need added cup,tro4 in 27p as well on a venom on a 20ft glassport.
As made say 3 1/2 deep will work fine go up any like the shooter added cup needed its a general performance type of prop.Gain some ponies I have a 29p shooter you can try.
Dont overlook merc or yammer props they will work on yours just not always vice versa excluding fat shaft.Like 25M or trophy.
I do have a 24 p raker but 13 spline for my four banger.