Fuel Pump Relay Dillemma
 

So... Sadly my LTX8 was second hand and did not come with the fuel pump relay that Microtech apparently provides. I found a place where I can buy a Bosch relay that I am told is what Microtech uses:

P2020-39707 Relay

However this relay has 5 pin outs and the schematic shows 4. Is the 5th one not used? Or more importantly is this other relay I found an alternative?

Cheap lookin' Relay

This relay has all the correct numbered pin outs that I need, but I am not sure if it is a safe bet. Any opinions?