Post 1998 Les Pauls need a little wider pick up than the regular humbuckers. The right dimension for a bridge pickup in a post 98 gibson is the DiMarzio F-spaced one, that sits in between the regular SD humbucker and the SD TB. in fact DiMarzio F-spaced pickups measure 2.01" (51 mm), standard-spaced pickups measure 1.90" (48 mm) while Seymour Duncan Trembuckers measure 2.07" (52.5 mm) and regular humbuckers measure 2.00" (50.75 mm). I installed a regular SD humbucker (a C8) in my 2004 standard. There is no need to put a TB in the bridge slot because it is not necessary for the strings to pass exactly over the center of the polepieces for best performance, but it is wise to avoid a situation where the E strings are sitting completely outside of the outer polepieces.