Is there a manual rack option available? I've been searching but didn't find any information.

None that I am aware of.

Why do you want one?

I rather manual steering when doing any form of racing.

I forgot which company makes them. I remember reading some supra owners runs them.

I'm not sure how great that will be in a car that weighs this much. Are you stripped down or still daily driving?

It's manageable in my 2000lb MR2 with 205's... but its a nightmare in the SC when the PS pump is down.

This is completely off topic and a tad late, but please what's the story with your MR2??

Just a basic stripped down AW11 with a Kirkey seat and Ariel Atom wheels. Will weigh a bit more in a few weeks when the cage gets put in. It's destined to run the 24 Hours of Lemons next month so I'm expecting a few cars to "modify" it for me and reduce its weight further

I picked mine up in really bad shape, but I'd love some day to get all the rust fixed and to a state similar to yours but the weather in my area is not permitting it -_- haven't even drove it more than two feet yet :/

My understanding is that Grannas Racing on Facebook was the one who had a manual steering option for the SC. Hit up Joel Grannas and ask him.
Not sure the point unless you're strictly drag racing. If you just want to lose the power steering pump, get a MR2 pump and switch to an electric pump.

www.Grannasracing.com Power Steering Delete

^ Just a heads up, a few people on facebook have said that the Grannas MKIV rack is not a direct fit on SC3/400s