Weiand #8007 intake on a 273 (Several questions)

As I mentioned before hes not swapping everything at once! Also going to have a VERY hard time finding anyone that will build him a looser converter for his early small/corse spline 904! Sure from 30 punch any & all transition air flow probloms will behind that rpm easily. I don't know of many street "challenge's"that go from 30 punch. Maybe a roll, let alone an actual drag strip! He asked from the beginning on a combo. With a stock bottom end & no mention of a higher stall t/c. By all means strap on that 750 & mat it from a stop & wonder why no tire spin with current drive train. Also how can the same carb rating be tits for a 273 ("that dont need to spin close to 7k") be good on the 360??? The 750 is about balls on for the 360 unless he wants to really make power/wind it up. Just going from own personal experience here. From a stop(uunless a manual trans better get that out there) it will be a dog off the line. Needs port velocity to signal the carb or crazy accel pump shot to get it to move air in & signal carb booster. Smaller carb WILL do thay alot sooner in rpm range.