When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
plus, in the 03-04 cobrathere are some serious internals. cast iron block with aluminum heads, fully counterweighted forged crankshaft, 4v, DOHC, chain drive to exhaust cams, secondary chains from exhaust to intake cams, roller finger followers with hydraulic lash adjustment, oval-wire beehive shaped valve springs. Much better for upgrades, can handle a lot more.
The E car engine is all forged as well, and has a MUCH more capable blower than a stock 03-04 Cobra. Without swapping the blower, the S281E has a tremendous amount of more potential over a stock 03-04 Cobra.