My throttle is a rod. I think I can bend it a little, maybe make a new end and shorten it. Trick is to maintain WOT with reduced movement.
On the brakes, I'm thinking I just need to shorten the linkage or put a spacer in between the master brake cylinder bracket and the firewall.
For the clutch I might be able to either make a longer rod down through the floor, which will move the pedal closer to the floor, or possibly adjust the linkage to lengthen it to rotate the z-bar and move the rod up (and the pedal down towards the firewall). I need to check to make sure I know where the clutch actually disengages and engages - for that I need a helper which I will have tomorrow.
Regarding cutting and welding the pedals, that is not a bad suggestion, except that getting replacements is next to impossible so it would be a last option deal.