i have no idea if this would fit in your cab but i used a 250 watt mh without a hitch. it works with indica strains really well. i had one sativa and that shot up so i switched to a 400 watt mh but for a strain like hashberry which is very similar to sadhu which i am now growing i think a 250 watt mh would do wonders. it doesnt produce that much heat either. at least from my exp. whatare the measurements of that cab?