Chassis preparation Model A 1930

[De Konjel]

I wanna build a chassis with the intention to use it in Time Trials/rally's etc.
Need some advise on what preparations to make.
Stay with the original suspension? Lower it?
"Z"ing the chassis? Boxing the chassis? Hydraulic brakes?
Or keep it all original?
I don't want to end up with an "Hot Rod" but with a sportscar that could have been build "back then"............

Any advise?

BART