Here’s another video I uploaded to Youtube a while ago. This one shows test fitting the headers outside the car, installing the engine & headers, then removing the headers with the engine in the car. The first version of the headers shown here both touched the firewall and would have needed to be removed before the oil filter could be changed, which was decidedly non-optimal. When I pointed this out to the header fabricator, he went back and built a completely new set at no extra charge.

Test fitting the headers, on Youtube

Headers, version 1.0, installed on the GSX-R1000 engine.