My buddy had a D16 from my 96 ex with a T3/T4 @ 11 psi and it hauled ass! He was running low 13's until he blew it up after his water pump died. So now hes got a B18 from a 93 GSR whoaaa big difference. Yeah the D series was cheaper to build but I admit the dohc has alot of torque in comparison. So D series if ya on a budget. I gave him my old motor and I'm sure you could pick one up for hardly nothing.:hsdunno: