1990 EX Auto Tranny Question

i'm not sure if anyone makes a rebuild kit with clutch pack upgrades. i know tci makes them for 92-00 civics. the main thing is finding someone who works on 'em also. i don't know about where you live, but honda specialty shops are few and far between where i'm from. you could always have the torque converter upgraded. it's not going to make the transmission be able withstand more power, but will get the power lost in the drivetrain to the wheels. you won't hear me say this much, but as easy as the manual swap would be on that car, i go for that.