Borbas,the Jaguar suspension is a fairly popular swap for both first and second series trucks here in Blighty,obviously availability of suitable donor cars here is somewhat better thanks to our generous use of salt in the winter,our biggest stumbling block is LHD steering rack availability/price.
Fwiw A friend of mine has a front and rear Jag set up on his and drives the snot out it,he loves it,he happily cruises on the freeway at speed in excess of 70/80mph with no worries,it's pretty good in the twisties too.
As you say,it's your truck do as you please,i'd rather compromise a little originality in favour of something that's safer and also much more fun to drive.
