You cannot limit downforce just on front end for that changes under/oversteer quite a bit so also install a good rear wing that is adjustable to set the wing angle for the racing your doing as too much angle causes more drag, hence losing top end speeds as in a ORR or too little wing on a short course has no downforce.

On my 1994 ZR-1 for Open Road Racing:



On our Snakeskinner ZR-1 :



On our 1999 Racer