Race block /engine and or parts wanted

Hi i did see your add
So tell me what is the bore size as is untouched ?
Did you find the 4 bolt mains ?
We curently have 596hp at the tyres @7500 rpm and are improving that at the moment with Joe Rhyne building our new R5
So you can imagine what we need from the motor we have to build and thats why i hadnt contacted you earlier (2 bolt block)
Is it a 340 mains block ?
We were thinking R3 is where we would end up
but tell me what are the differences between this one and a std block and then the R3
what machining is required on this one ?
Maybe send me your phone # and ill give you a call
Thanks
Michael