You're not going to get what you think here. Offy single four carb intakes were the worst designs ever made, aside from the Edelbrock SP2P. Ditto for an Eddy carb.
Actually i feel i will do ok with what I have set up so far. I am not looking for a 1/4 mile screamer, nor an engine that will get revved over 5K. what I built was a thought out lower rpm torque engine with careful planning. The cam shop is 30 miles from me, so when i went there I told the engineer that i was planning on long tube headers, gt40P heads, bored 68 block, offy dual port intake, stock crank and rods and slugs that the machine shop suggested @ $70 bucks each. (no idea where the tag is on them now).
I let him know that I would seldom run over 5K and not into drag racing but wanted the stomp pedal to do its thing when needed. the original 68 stick was in very nice condition and after $300 i got a 2 stage cam, along with recommendations for lifters and push rods.
The bad rap the offy intake got was from guys that wanted a 1/4 mile screaming intake and used them with shorty style headers. wrong combination from the get go.
I am building a show truck so a beat the daylights outta it truck is not what i am after.
cheers and here is the engine
http://www.therangerstation.com/forums/showthread.php?t=156327