There Are Many Ways To Skin A Cat...Since You Are Using A Decent Block To Begin With, Why Not Do It In A Proven Way? Yes, One Of These Girdles Is A Bunch Of Work, But It Was Proven To Hold 761 HP On A Factory "S" Scratch 428 Block. (Yes, We Converted It To Screw In Core Plugs As Well, Just A Bit Stiffer, And Cooler, Than Brass) Not Everyone Has The Luxury Of Having A Factory Cast 428 Block Like Mine Was Either, And, We Could Have Used A Set Of Aftermarkey Caps, But I Decided To Go The Extra Mile And Go With The Girdle. The Results Spoke For Themselves. Your  Block Will Thank You For It, Your Machinist, Will Likely Come Up With A Dozen Reasons As To Why, "It Cant Be Done"... Every Bit As Important, Is The Precision Balancing Of The Rotating Assembly. You Will See In The Photo That We Did A "No Holes Balance" On My Build, Which Had Many Benefits As Well. As I Said, There Are Many Ways To Skin A Cat, But You Only Get To Do So Once, Be Sure And Do It Right.