I have a set of Doug's Headers on my car. The install is really easy as long as you reverse the instructions and install the passenger side 1st due to the need to clear the oil dipstick tube. You definitely need to hoist the motor up to get the passenger side in.
Since you are rebuilding your motor, just install the motor without the headers and install them right after you get the motor back into position while you still have the engine hoist available.
Ground clearance is outstanding as they do not hang lower that the subframe rails.
2012 Mustang Boss 302 #1918, Competition Orange. FGF replacement 2006 Mustang V6 Pony, Vista Blue. Factory ordered. 2019 BMW X3 (Titled to the wife, but I'm always driving it for her. So I'm claiming it) Old projects, gone but not forgotten: 1967 FB 400, original CA car. After 22 years of work, trashed by the guy who was supposed to paint it. I had to sell it. 1980 Turbo Trans Am 1970 Mustang fastback, 351C 4Bbl, auto 1988 Mustang GT, 5 speed 1983 F-150 4x4, built 302 1994 Chevy K2500 HD 4x4, 454 TBI