Hi, I am using an LS3 in a Lola T70 Mk3B replica, using a remote mounted Davies Craig EWP 150 (or any suitable remote mount water pump) - so you can strip the whole mechanical water pump assembly off the front of the engine, liberate some parasitic HP losses and better control cooling - also after shutdown. No problem running alternator & air con using GM or Vintage Air accessory mounts, the problem comes if you want to use a block mounted belt drive oil pump for a full dry sump. I have had custom brackets designed and CNC machined to run alternator, AC compressor & oil pump - all mounted low on the engine block.