This is the list of what you need beyond the 2K kit:
www.ls1rx8.com/ls-conversion-kits.html
the additional parts NECESSARY to complete the swap are off the shelf parts and you will RECEIVE the parts list that are known compatible part for this swap.
list includes the following
(exhaust)
•exhaust manifolds
•longtube headers
(fuel supply)
•drop in fuel pump
•-AN fuel line and length
fittings
•throttle cable
•how to customize your stock rx8 PEDAL
•clutch master cylinder
•clutch line
•air intake
•battery
•battery cable length and size cable
•where to run the cable