The main bracket off the crossmember that holds the clutch and brake pedal combination, is only iron and it flexes when I push on either of the pedals. I usually mount a brace to something solid and this car is no exception. There is going to be a brace from the front of the pedal pivot housing over to the side of the bellhousing. Here is a pic of it installed in primer and then one of it painted.
This simple looking little brace took a long time to imagineer, fabricate, test fit, rebuild, retest, and rebuild again, but there it is.