I have a 1999 GMC Yukon SLT I want to put 3rd row seats into. Do all 1999 GMC Yukon SLT’s have plugged provisions for 3rd row seats under the carpets? Are seats from the 2000-2006+ GMT-400 chasis all compatible on the 1999 platform? Is there a chart or information I haven’t found yet that explains compatibility between platform years/generations?