@Zubaiw... Best of Luck with your project.
I have restored 3 Defenders of almost same models. Restoring a Defender is really a wonderful project. Infact you can get any/all parts required for restoration. I am not in favour of putting TA engines into LRs, but few people in Lahore used 1 KZ are satisfied with it. so there is no harm. Please remember not to make alteration which changes look of a Defender. If you post some more pics I can surely advise you more on it. Shani606, and others can also help you in this regard. PM me if you seek any assistance on parts issue.