[dug224]

Learned that to use a 5.3 out of a truck, I will need to change the oil pan to a front sump style. As can be seen in the second photo, the oil pan hits the cross member/steering rack. Based on the "car-part.com", there are plenty of the front sump 5.3's available. Will change direction and go after one with the the correct pan. Also, maybe due to lack of demand, they appear to be slightly cheaper than the normal and more common 5.3's. The front sump aluminum block 5.3's come in the '04 or newer Envoy, Trailblazer, Ranier (Buick) and Ascender (Isuzu). There are eight of them within 100 miles of me at this time. Most are low mileage. I am still optimistic I will be able to use factory motor mounts and drop the engine right in. It also looks like I will be lowering the suspension an inch or two based on the fact that the body will have to be raised to get the engine under the hood and the trans under the firewall/floor.

...also learned that you can't stuff the engine in with the exhaust manifolds still on. Those shock towers are really tall. Ended up sliding the body way back on the frame and dropping the unit in vertically.