Invstr396, A 300-36 Holley intake is a high rise/dual pane with a power range of idle-7200. It is the Holley version of an Edelbrock Performer RPM. http://www.holley.com/HiOctn/ProdLin...SM/300-36.html
I would like to try an 8004 Weiand. If I come across one, I probably will. It should work well. In a heavier car.......Probably better than my 300-36.
As far as the 151 cam goes........By todays standards, it's old school at best. It is a single pattern cam with 222* duration @ .050" on both intake and exhaust. It's also ground with slow ramps as the factory does to increase durability. I don't know for sure, but I would guess the duration would be in the 280+* range @ .006". I saw a dyno run years ago where the then new Crane HMV-272-2 kicked the old 151 to the curb from idle to red line. The HMV-272-2 was upgraded to the PowerMax H-272-2. The specs are: 272/284, 216/228, .454/.480, 112*lsa, power range 2000-5000. Nearly the same specs as the solid I run with the exception of the advertised duration. I wanted the short seat timing for the increased vacuum, off idle torque, and fuel mileage. I put 100 miles a day on the truck in the 1500-2000 rpm range. For some this wouldn't be an issue, but with todays fuel prices it is for me.
The Crane cam I listed above is just for reference. Every other cam company has one just like it. Pick your favorite. Comp even has small solid cams that are almost the same as My cam that came from Predator Cams. The Comp is ground with a 110*lsa. One could assume the Comp would make a little more peak power and torque in a narrower band than my cam. My cam with a 114*lsa would have a better idle, higher vacuum, and a wider/flatter power curve. The cam you choose is going to boil down to the exact combo you are running. Weight, trans, gear, intended use, etc.
I do know that if you get everything right, a 305 can be made to run well. I'm running 9.30's in the 1/8. Next years goal is to dip into the 8's and maintain my 21MPG. Dan