Hey guys im tha new guy from Cairo, Ga. Wanting 2 swap a 5.3 or an lq4/lq9 into a 98 sierra. Would appreciate sum insite on wat kind of headaches i mite b runnin into with this type of swap and which engine would b best. My main concern with tha 6.0l is tha 6 bolt torque converter, will a 5.3 flywheel work on a 6.0l cause im keeping tha stock 4l60e trans or should i just use a 5.3 engine 2 start with i can get either 1 at local boneyard 4 cheap.