Having never used rollers before, I plan on using a set of Harland Sharps on my 357, with 462 heads. Is there anything special in the way of pushrods , etc, that I need to be aware of? Obviously I have the option of going 1.5 across the board, or 1.6/1.5. Is there any benefit to this unless its a full out race motor? Thanks, I wanna get this puppy finished so I get the wifes surprise wrapped up. Get yer mind out of the gutter, I mean the engine is for her.