Aluminum Steering Bushing install on a 240?

Im planning on buying an aluminum steering bushing for my 240. on the 180’s the bushing is visible outside the firewall like in the picture below, but on the 240sx i was told it is inside the firewall. does anyone know how to install this or know what needs to be done for the install?

http://i71.photobucket.com/albums/i154/purp_nurp/33f67d33.jpg

Removing you exhaust manifold and Downpipe will help alot. Its right against the firewall.

are the bolts fairly easy to get to? the ones on the inside look like they would be difficult to get at

it is difficult.

Bottom side bolts of the manifold could be a bitch.