which taisol is it, they make a couple that are 80mm long and 60mm wide which are perfect for attaching an 80mm fan to, you should do it like this though
| | <----Taisol
It looks to me like you can easily attach an 80mm to the Taisol. Since it's 80mms long, just screw the fan holes into the heatsink. It will overhang the edge of the heatsink a bit, but if it is more powerful than the 60mm on it, not too much airflow will be lost.
i'd have to agree with Storm, i have the YS tech 26 cfm fan on my taisol and the noise is quite low, just need to get some quieter 120mm fans and i'd be set. according to via hardware monitor i have 40 C under full load @ 1.91 volts.
perhaps some U type bolts from a hardware store that are modified might work.