I had this opportunity for my B-body. A '69 GTX. That's a nice driver quality car. But not even close to numbers matching. Period correct 440 of lightly upgraded performance. 4-speed Dana rear. Car is D32 coded for an automatic. With interior not even close to fender tag. Thus a very decent candidate for performance upgrade.
I had the opportunity to buy a just off the dyno 6.4 non supercharged Gen III at 545 HP. So the choice? Pull a very good running '68 440 engine at 425 HP for $14k. For this engine. I would need to upgrade K-frame. Clutch/bellhousing. Electrical. Fuel system to EFI. Radiator plumbing redesign. And that's just what I can think of off the cuff?
My Answer was "Thanks, but no thanks. I could spend that $14k on aluminum heads and intake upgrades and cam. A833 transmission replacement for ideally a A855 5-speed. And save all the support hassles and costs to accommodate the newer technologies. And blow that Gen III off the road.
The only engine upgrade I would consider? A Gen II hemi. (A real hemi)
Just my opinion of course. And a quick walk around vid of the subject vehicle below.
