Run electric fans all the time?

I'm interested... PM me with details. :) Your mailbox is full so I can't PM you.
Did you need any tricks with spacers, adapters, etc.?

I looked at the numbers in the online catalog and they show the WP pulley is only 2" deep. Mine is a hair under 3". Unless it lines up with the second groove on the crank pulley?

I'd definitely rather try a pulley swap first than yet another (2-tube this time) aluminum radiator...
Those pulley numbers you have will give a 6.4/6.2 ratio which is about 3% overdrive. Better than the stock 5 or 8% underdrive! If it makes any difference at all then I'll know I'm on the right track.