looks pretty complicated and inefficient for no reason. It takes a lot to heat soak a properly setup a2w plus I pieced mine together for less than $700. Multiple back to back WOT pulls to 140 with my 2.7" and my IC coolant will be 70-80*. hdnseek, when you start having problems with heat soaking your A2W (likely in the 2.50"+ 5% OD range) then I would worry about upgrading. Personally at that power level and point I wouldnt be worrying about upgrading from an A2W to a A2A, I would be worrying about upgrading from a M90 to a T-70.
