i've not done a weight comparison, when i get chance i'll compare the 2.

visually they are very different, all unused mounts, castings etc have been machined right down, the oil filter casting has also been filled in and machined down.

I originally contacted cosworth to purchase a set of rods and pistons for my Zetec turbo. they then contacted me to see if i wanted various other bits like a CGI block, WRC spec head etc. all of which i bought.

Then they offered me the job lot for the right price, enough to make 5 complete engines with lots of spares (no ECU's, or turbos though)

all this for a Ford Orion eh? lol.....