You shouldnt need to remove your battery dude.. If you have the appropriate pipework diameter (2.5inch) it should be easy to install..
This is what you would need:
WELLY COOLER SET UP:
This is the list of the ebay item numbers you will need to fit the welly cooler to your LCR.
You will also need about 100mm of straight 63mm alloy pipe. What I did was cut a piece off of the original pipe that runs across the bottom of your bumper and joins both SMIC's together.
200484166200 - This is the wellycooler. (BTW these are seconds so may have some minor damage, mine had a tiny scratch and a few bent fins, I put all the damage on the backside, you can buy a perfect one from the toyo website for about £170) You will also need 4x M8 (8mm thread) bolts as it doesn't come with any, I bought mine for £1.50 from B&Q.
190924410625 - 76mm - 63mm reducers, you will need two of these.
221308537631 - 45 degree alloy pipe, you will need two of these, 63mm external diameter.
151103376441 - 90 degree silicone pipe, you will need two of these, internal diameter 63mm
190951861249 - 90 degree alloy pipe, you will need two of these, 63mm external diameter.
170731918190 - Silicone joiner, you will need two of these, I bought one and cut it in half as you cant see it, these are to join the 100mm of straight pipe into the system.
141098012210 - These are the jubilee clips I used you want 60-80mm they are tight but they fit, you need about 12, I used 13 as one of my joints kept popping off under boost so I put an extra one on there, which holds fine.
Ignore the ebay item numbers..
I got my whole kit from ASH on ebay for around £125. Not fitted yet as i still need to upgrade upper boost hoses but am very assured it will be a straight forward job