AJ's Opinion; what size SBM do I need

You mean to tell me AJ never considered owning a boat?
Now-now, that's not true; I have had at least one 318 (a 1973) in near continuous use since the early 80s. She has burned up at least two, maybe three sets of rings, and been thru several chassis. And several heads. She has had two different autos behind her, and two different TCs and three different manual transmissions including one, the A833OD with a GVod. And it was this 318 that blew one of those overdrives up, wiping the front right off it!
So IMO, I am qualified to speak of what I know to be true.
I keep telling you guys that I am not a 318 hater.
All together I'm counting at least 6of 318s on my watch, compared to just 4of 340s and just 3of 360s. Oh geez and at least 4 or more slanty cars. And that was just in 20 years from 1975 to 1995 all drivers.
My 68 Barracuda has had three different sized engines in it with nearly every kind of period trans Mopar had to offer, and with nearly every rearend available in an 8.75 and one 7.25 besides. I mean she has been very busy since I bought her in 1978. She's been a good mule for me.