Hello,

I'm no expert on B20s, but I can't think of too many reasons to be too picky other than the many types of heads offered over the years. Unless of course the engine comes with all the 'fixins. If you could get your hands on an engine that included a pair of good HIF6 SUs or that was retrofitted with quality HS6s, well that'd be great. Even an included Weber DGV would be better than those ZS carbs. Of course, most post '70 B20s are fuel injected and will require a little more work and modification if you wish to keep your vehicle carbed and "brainless". Fuel injected models came with a separate dual outlet exhaust manifold that I prefer to the intake\exhaust combo manifold (if the engine seller were to leave this item in place). Best of luck in selecting or rebuilding an engine. That's kinda my dream project!