1969 Camaro LSX 427 Project

[Vimes]

That engine is way, way too close to the firewall. Imagine having to change that one sensor between the block and the firewall. You'll have to pull the engine to do a 15 minute sensor swap. And, as close as that sensor is, any engine twist at all that pulls the engine back on that side will break that sensor at worst and gouge the paint behind it at best.

I understand the desire to move the weight back to the rear, but in this case you either need to move the engine forward or alter the firewall. At this stage of your build, altering the firewall would probably be easiest since it looks like you've got all the mounts and exhaust clearance to the frame worked out. That engine/trans/subframe setup looks pretty good as it is.