Bellhousing vs flywheel size

130 tooth = 10.5 inch clutch and flywheel and bell

143 tooth = 11 inch clutch and flywheel and bell

there is no mixing and matching....for a SB in an A body you will be best off with 10.5 inch. as 11 inch is not very common. The 11 inch is seen more commonly on B-bodies or bigger cars with big blocks