Bat - The engine I'm using is a 2.5L four-banger out of a 1987 Chevy S-10. Is that considered an "Iron Duke"? The manifold I got came from a local mini-stock racer. He wasn't sure where it came from, but our best guess is probably from an '80 - '82 Chevy Citation. They used this same engine, but the early ones were carbureted instead of injected. It includes an adapter to run a Holley 2-barrel carb. I also got the HEI distributor that has the coil in the cap and only requires one wire. The stock distributor had the coil separate and had a really weird wiring harness (computerized?). As soon as I get the porch project done I will get back on this project; my first objective will be to get some "fire in the hole". Let me know what you got... Do you still have my home e-mail address? Also, how's the roadster coming?