New kid on block seeks help!

Hi there folks! - so I happen across this forum after weeks of virtual searching for suitable Terrano + one week of actual viewing 5 vehicles so far.
I really need a swb for work (Landscape) - towing - that also looks ok for personal use.
I saw a 95 swb diesel manual yesterday looked immac. with a probably genuine 70,000 on the clock. Only thing is no intercooler bfore June 2006.
I suspect the intercooler makes quite a difference? I would probably have bought it but for that, apart from, when the dealer started the engine from cold there was dirty (blackish) smoke for about 5 secs - then 100% clean - is that usual/norealproblem?
I have put in a lot of footwork to try to find the right vehicle (London/N.Kent) without success yet. Manual is prob. best because of need to tow/+ reversing trailer. The japanese imports (Mistral etc) appear to be all automatic LWB. - is there a problem getting spares/parts for those?
Any advice really welcome at this point. I shall definately be purchasing asap.