I have exactly 24" of width at the front of the engine bay, forward of the LCA mounts, close to where the alternator and A/C compressor (which would not be used on my application) would be, so I think I am just barely okay there. Plenty of height (I have 31" above the drag link, and I could always switch to a steering rack if need be). Plenty of engine bay length, too.

Question on the oil pan. The oil pump is fairly typical for a Chevy V-type engine, so is the extra length, and the sump section in particular, simply for extra oil capacity? I don't think I'd have an issue with oil pan clearance, and I did read through many of the 3.4 TDC topics which did emphasize oil supply is critical for this engine, so my assumption is the extra large oil pan is designed for capacity reasons, to help ensure oil starvation is never an issue.

I suspect the exhaust manifolds (I would likely use two left(?) side manifolds) will be the main area of interference. From the few pics I've seen, they appear to be tucked in just slightly, and low enough on the head that they would be within the 25" max width mentioned...maybe a bit wider? That measurement (max width with both x-mans bolted to the engine) would be very helpful to have if possible, too.