Little help ID-ing this 340 wedge

My bad, got the two confused and I've lived here a year already! The cars been there awhile, a couple months. Guy has a rag top GTO and buick GS which are way nicer but not my brand of car.

That's weird you say the website doesn't claim it to be a 340. I asked the guy if it was he said yes and the sticker was original, even the air cleaner said 340..... That's bad practice, I really dislike people who badge their car as something it's not. I don't mind if folks make clones, but it MUST have the stuff the badge reflects otherwise thats just goofy. The air cleaner said 340 wedge. What a mix-matched Chernobyl baby... I'm thinkin hard..... really really love houndstooth bench seats and interior, but I feel I may get insanely screwed. Wedge heads are worth a nice $$$ and if its not even wedge... that's just lame. K frame weld job seemed crude too which might mean the alignment of the drive would be off.....probably is due to the main rear seal leakage...... UUUGGGHHH :( sigh...... guess I'm passing. It pays to wait to find a good decent car.