Also, Koenigsegg made it no secret that they were building their early cars off of engines they bought directly from Ford and then basically a race shop to be rebuilt, but the CC8S was in development for so long and both it and the CCR were made in small enough numbers that the engines were sourced with leftover Teksid blocks from the 90s Cobra/Mark VIII; not the weaker (but far cheaper) Canadian made blocks that Ford switched to for the aluminum 4 valve cars starting later in 1999. One of the reasons that has been purported for why Koenigsegg took their engine building significantly more in house from what they had been doing to that point was because the supply of those specific engines was essentially exhausted by the time they went to replace the CCR.