Weiand #8007 intake on a 273 (Several questions)

1965 a bodies are a pain in the butt to get stuff rite. There the last year of alot of stuff. Small pilot converter/corse spline. Ball & trunion output shaft are just a few. I have a converter I had ptc build for my old automatic 1965 904 its not crazy (didn't want a real loose one eather!!!) Will stall with my combo 2200-2300 im not using since I swapped to 4-speed id part with. But remember the more cam & carb you put on the already lower compressions motor it will need more stall. Yes 4.10's will help, but with rhem any hwy driving is out! unless yer ok with 55-60 mph tops at 3200-3500 rpm!