Pulling to the left

[Citizen Rider]

I just finished up 1 ton swap with 2wd WTO rebuild and ported box, ORD crossover, and PSC hydro assist ram. When i brought it home, it drove straight 3/4 of the way, and the last part it started pulling to the left. I drove it today and its still slowly pulling to the left. Im unsure if the tires are alligned or not. I bought everything but the ram used and already set up.

What should i check since its pulling to the left even with hydro?

 

[1985_K5_Silverado]

Alignment sounds like a good thing to check, especially after that large amount of front end mods.