Probably a kg or so heavier, due to the taller block.
As a matter of interest, I bought a 7000 mile 200bhp 2.3 Cosworth from a written off Caterham for £6,000 a year or two back, but it did come with exhaust, ECU, engine mounts, prop shaft dry sump, alternator etc ready to drop in, all that stuff may have to be added to a crate engine, so beware, the price on the sticker may not be the total cost of installation!
They are about, but pretty rare.
