Trueoo7 :
I am not the sharpest wrench in the toolbox but I managed to install the cooler and shroud pretty satisfactorily. The shroud required some snipping to get it to fit in my venom (similar to your BDR I presume). It took me about 6 hours to install the cooler itself, another twelve or so to do the hoses and fittings.
I had to install a remote
oil filter due to clearance problems at the filter. And of course I did a thermostat too.
I would say the key thing is to take your time, and plan everything out, as far as where you need to run your hoses, where you want to mount your thermostat, etc. You need to have a good idea of how to route the hoses when you order your hose end fittings to get the right number of elbows, straights, etc.
Make sure you plumb the thing correctly and dont cross the hoses!
I had to learn how to do Aeroquip reusable fittings and braided hose, which was fun. Other than that the skills required seem pretty basic.
I think then end result looks pretty good. I'll send you some pics if you like.
Good Luck.