Yup - 6400K 55W straight-pin tubes for 13-14 dollars, forget what I paid exactly. They are wicked bright, excellent balance when used with actinic.
I think the part # is PLL-55W. Just be specific when you call to check stock, as they have different colour temps in that model.
Try this:
http://www.brite-lite.com/CdnShop/Pu...cat105.htm#237
<EDIT: just noticed you're looking for 65W, not 55. Anyways, wasn't your PC fixture a 2x96w?>