questions

i have a supra mk3 7m gte. my dads old car just got the head gasket replaced since it blow wit a hks 1.2mm metal gasket. i will put ahks catback. intake ,jdm headers. new bov. short shifter. i have a stock clutch kit from auto zone and im wondering if u should use that one or should i get a after market one and if i should which one. just sum basic questions help me out