Landrover propshaft lenghts

Im building a hybrid offroader using a 300 tdi and lt77 box and have run into a problem with propshafts being the wrong lenght

For the front i need one thats no longer than 765mm from outer ends of flanges ,i considered sending my existing shaft to be shortened and wondered if any standard landrover props that could be bought off the shelf have a working range of around 720 -760mm ?

Thanks