Mercury electric fan

I have a 65 fastback 289 bored .30 over with A/C. I live in Puerto Rico where the average temp is 95 degrees. In order to keep my stang in good operating conditions (and to show off) I sometimes drive it to work which gets me in traffic jams. The car heats up to 220 and sometimes a bit more. I have the original radiator, fan and shroud set up. I want to go electric with a 3 row 68, 429 radiator (16”x24”). The clerk at the speed shop tells me a stock Mercury Saber fan ($150.00) would fit perfect this radiator and it has greater pull then most aftermarket fans. My question before I commit to buy is; has anyone tried this set up? Does it work? What do you guys think..

I went to the speed shop with the radiator and measured it. Perfect fit! I purchased it and after eliminating the original fan found that the electric fan touches the water pump. I went a head (since the radiator was not bolted on yet) and moved the radiator two inches to the right and it cleared with an extra inch. The speed shop threw in two 30 amp relays with #8 wires, they say the fan is pretty powerful and will need it for startup. I have not finished installing it and will not finish before the weekend. I will let you guys how it goes.

You guys were right... I had to change my alternator. I did 130 amp swap. Car runs much better, cooler and brighter head lights. Thanks a bunch!!