Hello guys, i have a doubt, can i fit a D16z6 Pistons on a D14A4? The block is the same... the pistons have the same diameter... i already have the D16Z6 exaust, intake, and gearbox... Or can i put the d16z6 block and use my head? Can my valvs deal with these pistons? What can i do? I dont wanna make an entire engine swap... Please help me, many thanks.