Thermoquad or Holley?

I have been having a lot of trouble out of my holley double pumper, since I bought the car last year. It has a oversized cam and I don't know any of the engine spec's. My intake is the old Torker 340 and the car needs a stall converter really if i keep running the current setup. I have no low end torque. I keep getting gas in the oil from the Holley its old and been rebuilt several times. A good buddy of mine gave me a New rebuilt from Chrysler thermoquad, it's for a 1977 400 HP engine. I can pick up a intake from another buddy, he has a stock 340 cast iron intake 71 casting he also has a wiand spread bore he'd sell me, I'm leaning toward the original cast iron because I can use the choke, what do y'all guys think, should I just buy a new holley or switch to a dual plane and use the thermoquad and maybe gain a little low end torque?

Definitely try the TQ and 71 cast iron intake, what have you got to loose. You will be faster all around and actually get OK mpg as a bonus. I ran a mechanical advance only distributor for years. No problem there.