67 valiant redo
We also did a preliminary test fit with the new engine and headers. Its a 6.0L lq4(ls type) engine. The headers were a tight fit, but seemed to clear everthing with no denting. The HDK front end played a huge factor in making header fitment issues minimal.
Here is the driver side header clearance. I have a fair bit of wiggle room with the steering shaft to get more clearance.
Passenger side, there is a tiny spot on the pinch weld that I will need trim(red arrow)
As far a the engine mounts go, I have a set of 5.7 hemi mounts and we are building a set off of them. The passenger side is shockingly close to working as is. It would probably work with a shim and slotting 2 of the holes like 1/4". The driver side mount is not very close.
In case anybody is wondering, the headers are Speed Engineering 1-7/8" swap headers for GM A & X body cars. I am pretty impressed with the quality for a $280 set of headers. They even have merge spikes in the collectors. Also, the ground clearance looks very good.