Length is the same.
The front Pro's weigh 11# versus 4# for the OME Sport
The OME gas stay in the extended position due to the gas charge like all other shocks I've dealt with.
The foams are super easy to compress but very hard to extend.
I have Slee everything and 866 rears. My Sports suck. Super rough. Totally overloaded in the rear. When I hit a seam in the road, it feels like the ass end of my truck is in my spine.