I want a tax- exempt VW camper (the pre-golf kind) but am worried about fuel consumtion/ performance?

Is there a diesel engine (turbo or otherwise) that is a direct swap, say out of a Passat or Golf etc etc? Costs/ anywhere that night do it for me (UK only please)
Answers:
chk out these sites these should help u

http://observer.guardian.co.uk/2001revie.

http://www.spokesmanreview.com/blogs/whe.

http://www.reviewcentre.com/reviews55498.

http://www.amazon.co.uk/gp/product/custo.

http://www.amazon.co.uk/exec/obidos/asin.

http://www.bizrate.co.uk/miscellaneousme.

http://www.bizrate.co.uk/miscellaneousme.

http://www.epinions.com/auto-review-2ac0.

http://www.shopping.com/xpr-volkswagen_1.

http://shopping.kelkoo.co.uk/b/a/ss_volk.

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