Rarity (and desirability) of a slant six/ factory 4 speed?

You must have missed where I am still building a long rod slant. Engines can be swapped pretty easily.
Missed it... I've swapped engines in and out of my car as well and if you recall I put the pink 318 with a very nice automatic in it for my wife. She never really was interested so it came back out. What sealed the deal was a Mustang going by me at the track that should have never touched me LOL... once you get used to that 400 you'll maybe put that slant 6 back in for a little bit and it'll come right back out for the 400 guaranteed...
There's no question this is a what is it worth thread! Just a sneaky way of going about it that's all... Like this conversation wasn't going to turn quickly....