Regarding your questions on the intake:
The manifold base is modified from a Weber system. This is similar to what Dennis Quella at Pantera Performance did for his race car. To quote Dennis from an article in PI, "After considerable welding, grinding, doweling and port matching, I finally had two separate 4V manifolds". It was not as simple as cutting apart a Weber manifold!
There are CNC'ed mounting plates that match the manifold to the throttle bodies. The throttles were sourced in the U.K. These are also available with dual injectors per body - in case you want to run 24 injectors total
The air-horn & air-box assembly was fabricated in the U.K. as was the fuel rail for the top (8) injectors.
I also have a complete Motec system to drive the fuel and ignition including M48 ECU, ignition expander, ignitors, sensors, pump, relays, harness, etc. All the Motec stuff was not included in the quoted price (since many people have their own preferences on the drive electronics), but let me know what you're looking for and we can negotiate from there. Included would be the upper and lower fuel rails, pressure gauge, and whatever sensors (e.g. TPS and pressure) are still attached to the system when I next pull it out of it's box.
I set the price based on what I've paid for similar systems from Kinsler and Hilborn. Beyond those systems I haven't really price-shopped. What else is out there that you're considering?
And if you're more interested in either a Kinsler or Hilborn system let me know. We might be able to work a deal for either one of those.
Regards,
Dave