Will this 7-blade fan fit my '66 Dart Slant Six?

Hi

I will be fixing the A/C on my dart probably this end of the month and do not think my current setup (4-blade fan) will work in this 95F weather with the A/C on full blast...

So, as the title says, will this fit?

http://www.ebay.com/itm/Mopar-18-CO...Parts_Accessories&vxp=mtr&hash=item53ead09245

and if so, do you think its adequate for my 170CID engine with a modern A/C compressor?

Current setup:


Thanks.

Syed