I have an all aluminum Cosworth BDG motor which was originally built and maintained by Steve Jennings Racing Engines. There was no expense spared and it has every upgrade. Right now, the motor is completely fresh with only dyno time after it was rebuilt by Jay Ivey engines.
It comes equipped with twin 48mm Weber carburetors including the base plate and inlet trumpets. It also comes equipped with flywheel and clutch. It has the 4-bolt exhaust ports .....everything complete, ready to go in your car.
I also have another identical motor but with 1.5 hours of track time, run in Historic Road Racing in a 1971 Lola T212 2-liter sports car. Ivey says these motors should be good for 20 hours at 9500 redline and if you change the cams and run it only to 8500revs (more torque and mid-range power), then the time between rebuilds goes up quite a lot.