409 pulley question

[Red 409 63 impala]

I am building up a 409 to put in my 63 Impala. Trying to figure out the correct placement of the idler pulley and alternator placement. As of now the car has neither pwr steering or air cond.
It is a 425 engine. Can any one help with pictures or info. Looks as if the alternator is on the passenger side and the idler pulley is on the driver side.

 

[430hp]

The idler pulley takes the place of the power steering pump if the car is not equipped with one. Both the idler pulley and the alternator are on the drivers side. Here is a picture of the idler pulley placement. The alternator bracket is also bolted to the drivers side head and also uses an exhaust manifold bolt.