emissions delete is very simple and easy enough to do and will clean up just about all those hoses in the back there. You can do a wire tuck too, and fuse box relocate. to each his own on that part as far as what plug you need to keep and one you dont and rerouting everything. you can relocate the battery to the trunk too, that'll free up alot of space. here's how my project looks now.
Full wire tuck (fuse box and engine harness)
Brake and clutch line tuck
Fuse box relocate
Cruise control delete
Hood prop delete (using hood shocks)