My ultimate dream diesel project is to put in a 7.3 Powerstroke in a mid-60s Lincoln Continental and then converting it to run on biodiesel or veggie oil. I think this idea would speak volumes to the concept of re-using/re-purposing old vehicles instead of discarding them in favor of newer cheaply-made vehicles.
Sorry about the random tangent. Anyway, back on topic: I second what SVOboy said about mounts and such. There's a guy on Turbobricks who transplanted a 1.9TDI into his Volvo 245. He said the biggest issues (both fabrication and cost-wise) were the mounts and tranny bellhousing adapter. Find thread here:
http://forums.turbobricks.com/showthread.php?t=100369
Best of luck on your project!
Regards,
Bryant