Sounds like a fun project, we will look forward to hearing/seeing more. You may have seen there is another active member here with a very similar setup, LR Discovery with a D24T and your same recipe of combination Volvo/LR ZF automatic transmission. Member
jetfiremuck. You would probably be interested in looking up his posts or getting in touch directly to share info on this interesting swap combination.
As RedArrow mentioned, if the motor has been apart, then you want to be sure you have everything carefully squared away in terms of the front timing belt, including the high specified ~350# torque on the front crankshaft pulley bolt. Our favorite topic here these days. Special locking tool required to hold the crank and achieve the torque spec (and typically only doable with engine installed in vehicle since the force will tip over any engine stand). You probably know about this considering how far you have gotten things already, but always worth a mention just in case.