Whizzerick,
Just put the 1st hundred miles on my 261 that has been "built" as you describe. +.030 overbore (no sleeves necessary), new valve guides and valves, new rocker arm shafts and rockers, "bulldog" can from Langdon's, Offy intake, two Carter/Webbers, Fenton headers. Really sound good and drives better.
Be prepared to do a lot of grinding on the intake to clear the headers.
Good luck, you'll love the result.
